February 2009
Bibliometric Analysis
for the U.S. Environmental Protection Agency/Office of Research and
Development's Science and Technology for Sustainability (STS)
Research Program
This is a bibliometric analysis of the papers prepared by intramural and extramural researchers of
the U.S. Environmental Protection Agency (EPA) of the Science and Technology for
Sustainability (STS) Research Program. For this analysis, 794 journal papers and 71 non-journal
publications, published from 1998 to 2008, were reviewed. The 794 journal papers were cited
18,684 times and the 71 non-journal publications were cited 1,637 times in the journals covered
by Thomson Reuter's Web of Science1 and Scopus2. Of the 794 journal papers, 723 (91.1%) have
been cited at least once in a journal. Of the 71 non-journal publications, 34 (47.9%) have been
cited at least once in a journal.
Searches of Thomson Reuter's Web of Science and Scopus were conducted to obtain times cited
data for the STS journal publications. The analysis was completed using Thomson Reuter's
Essential Science Indicators (ESI) and Journal Citation Reports (JCR) as benchmarks. ESI
provides access to a unique and comprehensive compilation of essential science performance
statistics and science trends data derived from Thomson Reuter's databases. For this analysis, the
ESI highly cited papers thresholds as well as the hot papers thresholds were used to assess the
influence and impact of the STS papers. JCR is a recognized authority for evaluating journals. It
presents quantifiable statistical data that provide a systematic, objective way to evaluate the
world's leading journals and their impact and influence in the global research community. The
two key measures used in this analysis to assess the journals in which the EPA STS papers are
published are the Impact Factor and Immediacy Index. The Impact Factor is a measure of the
frequency with which the "average article" in a journal has been cited in a particular year. The
Impact Factor helps evaluate a journal's relative importance, especially when compared to other
journals in the same field. The Immediacy Index is a measure of how quickly the "average
article" in a journal is cited. This index indicates how often articles published in a journal are
cited within the same year and it is useful in comparing how quickly journals are cited.
The report includes a summary of the results of the analysis, an analysis of the 794 STS journal
papers analyzed by ESI field (e.g., chemistry, environment/ecology, materials science), an
analysis of the journals in which the 794 STS papers were published, a table of the highly cited
researchers in the STS Research Program, an analysis of the non-journal publications, and a list of
the patents and patent applications resulting from the program.
Thomson Reuter's Web of Science provides access to current and retrospective multidisciplinary information from
approximately 8,830 of the most prestigious, high impact research journals in the world. Web of Science also provides
cited reference searching.
2
Scopus is a large abstract and citation database of research literature and quality Web sources designed to support the
literature research process. Scopus offers access to 15,000 titles from 4,000 different publishers, more than 12,850
academic journals (including coverage of 535 Open Access journals, 750 conference proceedings, and 600 trade
publications), 27 million abstracts, 245 million references, 200 million scientific Web pages, and 13 million patent
records.
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
SUMMARY OF RESULTS
1. More than one-quarter of the STS publications are highly cited papers. A review of the citations indicates that
225 (28.3%) of the STS papers qualify as highly cited when using the ESI criteria for the top 10% of highly cited
publications. This is 2.8 times the number expected. Thirty-five (4.4%) of the STS papers qualify as highly cited
when using the ESI criteria for the top 1 %, which is 4.4 times the number expected. Seven (1.0%) of these papers
qualify as very highly cited when using the criteria for the top 0.1 %, which is 10 times the number anticipated. One
paper (0.1%) actually meets the 0.01% threshold for the most highly cited papers, which is more than 10 times the
0.08 number expected.
2. The STS papers are more highly cited than the average paper. Using the ES/ average citation rates for papers
published by field as the benchmark, in 13 of the 19 fields in which the EPA STS papers were published, the ratio of
actual to expected cites is greater than 1, indicating that the STS papers are more highly cited than the average
papers in those fields. For all 19 fields combined, the ratio of total number of cites to the total number of expected
cites (18,684 to 8,029) is 2.3, indicating that the STS papers are more highly cited than the average paper.
3. More than one-third of the STS papers are published in high impact journals. Two hundred eight-one (281) of
the 794 papers were published in the top 10% of journals ranked by JCR Impact Factor, representing 35.4% of
EPA's STS papers. This number is 3.5 times higher than expected. Two hundred seventy-five (275) of the 794
papers appear in the top 10% of journals ranked by JCR Immediacy Index, representing 34.6% of EPA's STS
papers. This number is 3.5 times higher than expected.
4. Eleven of the STS papers qualify as hot papers. Using the hot paper thresholds established by ES/ as a
benchmark, 11 hot papers, representing 1.4% of the STS papers, were identified in the analysis. Hot papers are
papers that were highly cited shortly after they were published. The number of STS hot papers is 14 times higher
than the 0.8 hot papers expected.
5. The authors of the STS papers cite themselves much less than the average author. Six hundred fifty-eight
(658) of the 18,684 cites are author self-cites. This 3.5% author self-citation rate is well below the accepted range of
10-30% author self-citation rate.
6. Thirteen of the authors of the STS papers are included in ISIHighlyCited.com, which is a database of the
world's most influential researchers who have made key contributions to science and technology during the period
from 1981 to 1999.
7. The 71 nonjournal publications were cited 1,637 times in journals. 34 (47.9%) were cited at least once in a
journal and the authors cited themselves 17 times (1.0% self-citation rate), which is much less than the literature-
reported 10-30% range for author self-citation. 6 (8.4%) of the nonjournal publications were highly cited when using
the ESI criteria for the top 10% of highly cited publications. Three (4.2%) of the nonjournal publications met the ESI
threshold for the top 1%, and 1 (1.4%) publication met the ESI threshold for the top 0.1%. These numbers are 4
and 14 times higher than expected. None of the nonjournal publications met the ESI threshold for the top 0.01%.
8. There were 30 patents (29 U.S. and 1 international) issued and 3 patent applications filed by investigators
from 1998 to 2008 for research that was conducted under EPA's STS research program. Seventeen (59%) of the 29
U.S. patents have been referenced 115 times by other patents.
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Highly Cited STS Publications
All of the journals covered by ESI are assigned a field, and to compensate for varying citation
rates across scientific fields, different thresholds are applied to each field. Thresholds are set to
select highly cited papers to be listed in ESI. Different thresholds are set for both field and year
of publication. Setting different thresholds for each year allows comparable representation for
older and younger papers for each field.
The 794 STS journal papers reviewed for this analysis were published in journals that were
assigned to 19 of the 22 ESI fields. The distribution of the papers among these 19 fields and the
number of citations by field are presented in Table 1.
Table 1. STS Papers by ESI Fields
ESI Field
Agricultural Sciences
Biology & Biochemistry
Chemistry
Clinical Medicine
Computer Science
Economics & Business
Engineering
Environment/Ecology
Geosciences
Immunology
Materials Science
Microbiology
Molecular Biology & Genetics
Multidisciplinary
Pharmacology & Toxicology
Physics
Plant & Animal Science
Psychiatry/Psychology
Social Sciences, General
No. of
Citations
26
836
13,714
61
125
32
1,488
684
68
22
503
224
84
533
48
120
62
7
47
Total = 18,684
No. of EPA
STS Papers
2
43
434
2
7
1
119
77
6
5
52
13
3
3
4
12
3
1
7
Total = 794
Average
Cites/Paper
13.0
19.4
31.6
30.5
17.8
32.0
12.5
8.9
11.3
4.4
9.7
17.2
28.0
177.7
12.0
10.0
20.7
7.0
6.7
23.5
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
There are 225 (28.3% of the papers analyzed) highly cited EPA STS papers in 13 of the 17
fields—Biology & Biochemistry, Chemistry, Clinical Medicine, Computer Science, Economics
& Business, Engineering, Environment/Ecology, Materials Science, Microbiology,
Multidisciplinary, Pharmacology & Toxicology, Physics, and Plant & Animal Science—when
using the ESI criteria for the top 10% of papers. The number of highly cited papers is nearly 3
times the number expected to meet this threshold. Table 2 shows the number of STS papers in
those 13 fields that meet the top 10% threshold in ESI
Table 2. Number of Highly Cited STS Papers by Field (top 10%)
ESI Field
Biology & Biochemistry
Chemistry
Clinical Medicine
Computer Science
Economics & Business
Engineering
Environment/Ecology
Materials Science
Microbiology
Multidisciplinary
Pharmacology & Toxicology
Physics
Plant & Animal Science
Citations
394
10,411
57
122
32
1,126
298
354
68
533
13
32
62
Total =
13,502
No. of
Papers
5
153
1
6
1
32
5
15
1
3
1
1
1
Total =
225
Average
Cites/Paper
78.8
68.0
57.0
20.3
32.0
35.2
59.6
23.6
68.0
533.0
13.0
32.0
62.0
60.0
% of EPA
Papers in
Field
11.6%
35.2%
50.0%
85.7%
100.0%
26.9%
6.5%
28.8%
7.7%
100.0%
25.0%
8.3%
33.3%
28.3%
Thirty-five (4.4%) of the papers analyzed qualify as highly cited when using the ESI criteria for
the top 1% of papers, which is more than 4 times higher than the expected number to meet this
threshold. These papers cover six fields—Chemistry, Engineering, Multidisciplinary,
Environment/Ecology, Materials Science, and Plant & Animal Science. Table 3 shows the 32
papers by field that meet the top 1% threshold in ESI The citations for these 32 papers are
provided in Tables 4 through 9. There were 7 (0.9%) very highly cited STS papers in the fields
of Chemistry, Engineering, and Multidisciplinary (see Table 10), which is 9 times the number
expected to meet this threshold. These papers, which meet the top 0.1% threshold in ESI, are
listed in Tables 11 through 13. One of the STS papers actually meets the top 0.01% threshold
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
in ESI, which represents 0.1% of the papers (see Table 14). This is 10 times the number
expected to meet this threshold. The citation for this paper is provided in Table 15.
Table 3. Number of Highly Cited STS Papers by Field (top 1%)
ESI Field
Chemistry
Engineering
Environment/Ecology
Materials Science
Multidisciplinary
Plant & Animal Science
Citations
3,482
498
185
57
486
62
Total =
6,180
No. of
Papers
25
5
2
1
1
1
Total =
35
Average
Cites/Paper
139.3
99.6
92.5
57.0
486.0
62.0
176.6
% of EPA
Papers in
Field
5.8%
4.2%
2.6%
1.9%
33.3%
33.3%
4.4%
Table 4. Highly Cited STS Papers in the Field of Chemistry (top 1%)
No. of
Cites
138
200
219
291
446
743
158
168
First Author
Mesiano AJ
Hudlicky T
Matyjaszewski K
Patten TE
LiCJ
Varma RS
Matyjaszewski K
Varma RS
Paper
Supercritical biocatalysis. Chemical Reviews 1999;99(2):623-633.
Enzymatic dihydroxylation of aromatics in enantioselective synthesis:
Expanding asymmetric methodology. A Idrichimica Ada
1999;32(2):35-62.
Transition metal catalysis in controlled radical polymerization: atom
transfer radical polymerization. Chemistry-A European Journal
1999;5(11):3095-3102.
Copper(I)-catalyzed atom transfer radical polymerization. Accounts of
Chemical Research 1999;32(10):895-903.
Organic syntheses using indium-mediated and catalyzed reactions in
aqueous media. Tetrahedron 1999;55(37): 1 1 149-1 1 176.
Solvent-free organic syntheses - using supported reagents and
microwave irradiation. Green Chemistry 1999;l(l):43-55.
Gradient copolymers by atom transfer radical copolymerization.
Journal of Physical Organic Chemistry 2000;13(12):775-786.
Solvent-free accelerated organic syntheses using microwaves. Pure
and Applied Chemistry 2001;73(1): 193-198.
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
No. of
Cites
234
830
152
154
184
90
99
129
140
218
34
37
153
First Author
Blanchard LA
Huddle ston JG
Holbrey JD
Wei CM
Varma RS
Holbrey JD
Gutowski KE
Holbrey JD
KaarJL
Swatloski RP
KimJH
Remsing RC
LiCJ
Paper
High-pressure phase behavior of ionic liquid/CO2 systems. Journal of
Physical Chemistry B 2001;105(12):2437-2444.
Characterization and comparison of hydrophilic and hydrophobic room
temperature ionic liquids incorporating the imidazolium cation. Green
Chemistry 2001;3(4):156-164.
Efficient, halide free synthesis of new, low cost ionic liquids: 1,3-
dialkylimidazolium salts containing methyl- and ethyl-sulfate anions.
Green Chemistry 2002;4(5):407-413.
Enantioselective direct-addition of terminal alkynes to imines
catalyzed by copper(I)pybox complex in water and in toluene. Journal
of the American Chemical Society 2002;124(20):5638-5639.
Clay and clay-supported reagents in organic synthesis. Tetrahedron
2002;58(7):1235-1255.
Liquid clathrate formation in ionic liquid-aromatic mixtures.
Chemical Communications 2003;(4):476-477.
Controlling the aqueous miscibility of ionic liquids: aqueous biphasic
systems of water-miscible ionic liquids and water-structuring salts for
recycle, metathesis, and separations. Journal of the American
Chemical Society 2003;125(22):6632-6633.
Crystal polymorphism in l-butyl-3-methylimidazolium halides:
supporting ionic liquid formation by inhibition of crystallization.
Chemical Communications 2003;14: 1636-1637.
Impact of ionic liquid physical properties on lipase activity and
stability. Journal of the American Chemical Society
2003;125(14):4125-4131.
Ionic liquids are not always green: hydrolysis of l-butyl-3-
methylimidazolium hexafluorophosphate. Green Chemistry
2003;5(4):361-363.
Ultra-deep desulfurization and denitrogenation of diesel fuel by
selective adsorption over three different adsorbents: a study on
adsorptive selectivity and mechanism. Catalysis Today 2006; 111(1-
2):74-83.
Mechanism of cellulose dissolution in the ionic liquid l-n-butyl-3-
methylimidazolium chloride: a C-13 and Cl-35/37 NMR relaxation
study on model systems. Chemical Communications 2006;(12): 1271-
1273.
Organic chemistry in water. Chemical Society Reviews 2006;35(1):68-
82.
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
No. of
Cites
First Author
Paper
18
Polshettiwar V
Tandem bis-aldol reaction of ketones: a facile one-pot synthesis of
1,3-dioxanes in aqueous medium. Journal of Organic Chemistry
2007;72(19):7420-7422.
32
Zhang YH
Gold(III)-catalyzed double hydroamination of o-alkynylaniline with
terminal alkynes leading to N-vinylindoles. Organic Letters
2007;9(4):627-630.
10
Polshettiwar V
Greener and rapid access to bio-active heterocycles: room temperature
synthesis of pyrazoles and diazepines in aqueous medium.
Tetrahedron Letters 2008;49(2):397-400.
15
Polshettiwar V
Microwave-assisted organic synthesis and transformations using
benign reaction media. Accounts of Chemical Research
2008;41(5):629-639.
Table 5. Highly Cited STS Papers in the Field of Engineering (top 1%)
No. of
Cites
66
84
254
77
17
First Author
Clancy JL
Bukhari Z
Blanchard LA
Abraham MH
von Blottnitz H
Paper
UV light inactivation of Cryptosporidium oocysts. Journal of the
American Water Works Association 1998;90(9):92-102.
Medium-pressure UV for oocyst inactivation. Journal of the
American Water Works Association 1999;91(3):86-94.
Recovery of organic products from ionic liquids using supercritical
carbon dioxide. Industrial & Engineering Chemistry Research
2001;40(l):287-292.
Some novel liquid partitioning systems: water-ionic liquids and
aqueous biphasic systems. Industrial & Engineering Chemistry
Research 2003;42(3):413-418.
A review of assessments conducted on bio-ethanol as a transportation
fuel from a net energy, greenhouse gas, and environmental life cycle
perspective. Journal of Cleaner Production 2007;15(7):607-619.
Table 6. Highly Cited STS Papers in the Field of Environment/Ecology (top 1%)
No. of
Cites
First Author
Paper
117
Visser AE
Task-specific ionic liquids incorporating novel cations for the coordination
and extraction of Hg2+ and Cd2+: synthesis, characterization, and
extraction studies. Environmental Science & Technology
2002;36(ll):2523-2529.
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
No. of
Cites
68
First Author
SuhS
Paper
System boundary selection in life-cycle inventories using hybrid
approaches. Environmental Science & Technology 2004;38(3):657-664.
Table 7. Highly Cited STS Paper in the Field of Materials Science (top 1%)
No. of
Cites
57
First Author
LiY
Paper
Recent advances of conductive adhesives as a lead-free alternative in
electronic packaging: materials, processing, reliability and applications.
Materials Science & Engineering: R: Reports 2006;5 1(1-3): 1-35.
Table 8. Highly Cited STS Paper in the Field of Multidisciplinary (top 1%)
No. of
Cites
486
First Author
Blanchard LA
Paper
Green processing using ionic liquids and CO2.
1999;399(6731):28-29.
Nature
Table 9. Highly Cited STS Paper in the Field of Plant & Animal Science (top 1%)
No. of
Cites
62
First Author
Walsh CJ
Paper
The urban stream syndrome: current knowledge and the search for a cure.
American Benthological Society 2005;24(3):706-723.
Journal of the North
Table 10. Number of Very Highly Cited STS Papers by Field (top 0.1%)
ESI Field
Chemistry
Engineering
Multidisciplinary
Citations
2,187
254
486
Total =
2,927
No. of
Papers
5
1
1
Total =
7
Average
Cites/Paper
437.4
254.0
486.0
418.1
% of EPA
Papers in
Field
1.1%
0.8%
33.3%
1.0%
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Table 11. Very Highly Cited STS Papers in the Field of Chemistry (top 0.1%)
No. of
Cites
446
743
830
153
15
First Author
LiCJ
Varma RS
Huddle ston JG
LiCJ
Polshettiwar V
Paper
Organic syntheses using indium-mediated and catalyzed reactions in
aqueous media. Tetrahedron 1999;55(37): 1 1 149-1 1 176.
Solvent-free organic syntheses — using supported reagents and
microwave irradiation. Green Chemistry 1999;l(l):43-55.
Characterization and comparison of hydrophilic and hydrophobic room
temperature ionic liquids incorporating the imidazolium cation. Green
Chemistry 2001;3(4):156-164.
Organic chemistry in water. Chemical Society Reviews 2006;35(1):68-
82.
Microwave-assisted organic synthesis and transformations using
benign reaction media. Accounts of Chemical Research
2008;41(5):629-639.
Table 12. Very Highly Cited STS Papers in the Field of Engineering (top 0.1%)
No. of
Cites
254
First Author
Blanchard LA
Paper
Recovery of organic products from ionic liquids using supercritical
carbon dioxide. Industrial & Engineering Chemistry Research
2001;40(l):287-292.
Table 13. Very Highly Cited STS Paper (top 0.1%)
ESI Field
Multidisciplinary
No. of
Cites
486
First Author
Blanchard LA
Paper
Green processing using ionic liquids and CO2. Nature
1999;399(6731):28-29.
Table 14. Number of Extremely Highly Cited STS Papers by Field (top 0.01%)
ESI Field
Multidisciplinary
Citations
486
Total =
486
No. of
Papers
1
Total =
1
Average
Cites/Paper
486.0
486.0
% of EPA
Papers in
Field
33.3%
0.1%
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Table 15. Extremely Highly Cited STS Papers (top 0.01%)
ESI Field
Multidisciplinary
No. of
Cites
486
First Author
Blanchard LA
Paper
Green processing using ionic liquids and CO2. Nature
1999;399(6731):28-29.
Ratio of Actual Cites to Expected Citation Rates
The expected citation rate is the average number of cites that a paper published in the same
journal in the same year and of the same document type (article, review, editorial, etc.) has
received from the year of publication to the present. Using the ESI average citation rates for
papers published by field as the benchmark, in 13 of the 19 fields in which the EPA STS papers
were published, the ratio of actual to expected cites is greater than 1, indicating that the STS
papers are more highly cited than the average papers in those fields (see Table 16). For all 19
fields combined, the ratio of total number of cites to the total number of expected cites (18,684 to
8,029.2) is 2.3, indicating that the STS papers are more highly cited than the average paper.
Table 16. Ratio of Actual Cites to Expected Cites for STS Papers by Field
ESI Field
Agricultural Sciences
Biology & Biochemistry
Chemistry
Clinical Medicine
Computer Science
Economics & Business
Engineering
Environment/Ecology
Geosciences
Immunology
Materials Science
Microbiology
Molecular Biology & Genetics
Multidisciplinary
Pharmacology & Toxicology
Total
Cites
26
836
13,714
61
125
32
1,488
684
68
22
503
224
84
533
48
Expected Cite
Rate
17.3
749.0
4,944.5
39.4
30.3
10.2
569.8
616.1
76.6
110.4
303.0
226.8
106.6
13.1
35.9
Ratio
1.5
1.1
2.8
1.5
4.1
3.1
2.6
1.1
0.9
0.2
1.7
<1.0
0.8
40.7
1.3
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
ESI Field
Physics
Plant & Animal Science
Psychiatry/Psychology
Social Sciences, General
TOTAL
Total
Cites
120
62
7
47
18,684
Expected Cite
Rate
122.7
10.2
16.3
31.0
8,029.2
Ratio
<1.0
6.1
0.4
1.5
2.3
JCR Benchmarks
Impact Factor. The JCR Impact Factor is a well known metric in citation analysis. It is a
measure of the frequency with which the "average article" in a journal has been cited in a
particular year. The Impact Factor helps evaluate a journal's relative importance, especially
when compared to others in the same field. The Impact Factor is calculated by dividing the
number of citations in the current year to articles published in the 2 previous years by the total
number of articles published in the 2 previous years.
Table 17 indicates the number of STS papers published in the top 10% of journals, based on the
JCR Impact Factor. Two hundred eighty-one (281) of 794 papers were published in the top 10%
of journals, representing 35.4% of EPA's STS journal papers. This indicates that more than one-
third of the STS papers are published in the highest quality journals as determined by the JCR
Impact Factor, which is 3.5 times higher than the expected percentage.
Table 17. STS Papers in Top 10% of Journals by JCR Impact Factor
EPA STS
Papers in
that Journal
1
2
1
3
1
1
1
3
16
2
Journal
Nature
Science
Chemical Reviews
Accounts of Chemical Research
Materials Science & Engineering: R: Reports
Chemical Society Reviews
Aldrichimica Acta
Angewandte Chemie -International Edition
Journal of the American Chemical Society
Advanced Functional Materials
Impact
Factor
(IF)
28.751
26.372
22.757
16.214
14.400
13.082
11.929
10.031
7.885
7.496
JCR IF
Rank
10
14
24
43
59
69
78
105
156
175
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
EPA STS
Papers in
that Journal
2
1
1
26
1
1
1
6
32
1
11
4
5
31
30
6
1
6
1
7
1
1
5
3
5
2
4
19
3
Journal
Chemistry-A European Journal
Analytical Chemistry
Biotechnology Advances
Chemical Communications
Advanced Synthesis & Catalysis
Environmental Microbiology
Journal of Medicinal Chemistry
Chemistry of Materials
Green Chemistry
Ecology
Organic Letters
Journal of Catalysis
Applied Catalysis B -Environmental
Macromolecules
Environmental Science & Technology
Journal of Materials Chemistry
Frontiers in Ecology and the Environment
Biomacromolecules
Inorganic Chemistry
Journal of Physical Chemistry B
Bioscience
Journal of Urology
Crystal Growth & Design
Journal of Bacteriology
Langmuir
Applied and Environmental Microbiology
Current Organic Chemistry
Journal of Organic Chemistry
Organometallics
Impact
Factor
(IF)
5.330
5.287
5.236
5.141
4.977
4.929
4.895
4.883
4.836
4.822
4.802
4.737
4.651
4.411
4.363
4.339
4.269
4.169
4.123
4.086
4.083
4.053
4.046
4.013
4.009
4.004
3.961
3.959
3.833
JCR IF
Rank
307
309
321
331
348
354
359
361
367
370
375
386
402
454
465
470
493
519
532
542
543
549
551
566
567
571
584
586
618
10
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
EPA STS
Papers in
that Journal
2
1
1
3
13
1
2
4
4
1
1
Total = 281
Journal
Journal of Macromolecular Science-Pure and Applied
Chemistry
Current Opinion in Drug Discovery & Development
Geology
Applied Physics Letters
Journal of Polymer Science Part A-Polymer Chemistry
Chemical Research in Toxicology
Metabolic Engineering
Water Research
Macromolecular Rapid Communications
Advances in Biochemical Engineering/Biotechnology
Dalton Transactions
Impact
Factor
(IF)
3.769
3.760
3.754
3.596
3.529
3.508
3.444
3.427
3.383
3.253
3.212
JCR IF
Rank
640
647
650
713
740
745
772
111
794
851
867
Immediacy Index. The JCR Immediacy Index is a measure of how quickly the average article in
a journal is cited. It indicates how often articles published in a journal are cited within the year
they are published. The Immediacy Index is calculated by dividing the number of citations to
articles published in a given year by the number of articles published in that year.
Table 18 indicates the number of STS papers published in the top 10% of journals, based on the
JCR Immediacy Index. Two hundred seventy-five (275) of the 794 papers appear in the top 10%
of journals, representing 34.6% of the STS papers. This indicates that more than one-third of the
STS papers are published in the highest quality journals as determined by the JCR Immediacy
Index, which is 3.5 times higher than the expected percentage.
Table 18. STS Papers in Top 10% of Journals by JCR Immediacy Index
EPA STS
Papers in that
Journal
1
2
1
1
Journal
Nature
Science
Aldrichimica Acta
Chemical Society Reviews
Immediacy
Index
(II)
7.385
6.387
4.625
3.406
JCR 11
Rank
9
15
29
44
11
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
EPA STS
Papers in that
Journal
1
3
3
16
3
26
2
11
2
1
32
1
1
1
3
19
3
7
1
1
4
6
1
1
4
1
1
1
1
Journal
Chemical Reviews
Angewandte Chemie-International Edition
Accounts of Chemical Research
Journal of the American Chemical Society
Environmental Science & Policy
Chemical Communications
Metabolic Engineering
Organic Letters
Chemistry-A European Journal
Environmental Modelling & Software
Green Chemistry
Analytical Chemistry
Frontiers in Ecology and the Environment
Environmental Microbiology
Journal of Bacteriology
Journal of Organic Chemistry
Organometallics
Journal of Industrial Ecology
Biometals
Advanced Synthesis & Catalysis
Journal of Catalysis
Journal of Materials Chemistry
Journal of Medicinal Chemistry
Ecology and Society
Macromolecular Rapid Communications
Journal of Soil and Water Conservation
AMBIO
Bioscience
Dalton Transactions
Immediacy
Index
(II)
3.274
2.271
1.736
1.397
1.298
1.297
1.146
1.133
1.033
0.976
0.955
0.911
0.907
0.900
0.893
0.886
0.876
0.868
0.859
0.852
0.800
0.799
0.789
0.789
0.787
0.778
0.777
0.761
0.758
JCRll
Rank
48
98
133
212
241
242
297
302
355
410
428
471
476
483
492
498
504
514
526
536
576
580
594
594
597
608
610
626
633
12
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
EPA STS
Papers in that
Journal
31
1
9
1
2
2
1
5
1
5
9
6
7
3
30
Total = 275
Journal
Macromolecules
Inorganic Chemistry
International Journal of Life Cycle Assessment
Journal of Urology
New Journal of Chemistry
Advanced Functional Materials
European Journal of Organic Chemistry
Applied Catalysis B -Environmental
Geology
Langmuir
Tetrahedron
Chemistry of Materials
Journal of Physical Chemistry B
Applied Physics Letters
Environmental Science & Technology
Immediacy
Index
(II)
0.755
0.747
0.712
0.688
0.687
0.683
0.669
0.666
0.660
0.657
0.637
0.632
0.629
0.627
0.615
JCRll
Rank
637
650
694
733
738
745
772
779
789
796
835
845
851
856
876
Hot Papers
ESI establishes citation thresholds for hot papers, which are selected from the highly cited papers
in different fields, but the time frame for citing and cited papers is much shorter—papers must be
cited within 2 years of publication and the citations must occur in a 2-month time period. Papers
are assigned to 2-month periods and thresholds are set for each period and field to select 0.1% of
papers.
Using the hot paper thresholds established by ESI as a benchmark, 11 hot papers, representing
1.4% of the STS papers, were identified in the fields of Chemistry, Engineering, and Plant &
Animal Science. The number of STS hot papers is 14 times higher than expected. The hot
papers are listed in Table 19.
13
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Table 19. Hot Papers Identified Using ESI Thresholds
Field
ESI Hot
Papers
Threshold
No. of Cites in 2-
Month Period
Paper
Chemistry
12
11
10 cites in
September-
October 2000
Li C-J, Chan T-H. Organic syntheses using indium-
mediated and catalyzed reactions in aqueous media.
Tetrahedron 1999;55(37): 11149-11176.
12 cites in
December 2000-
January 2001
Varma RS. Solvent-free organic syntheses - using
supported reagents and microwave irradiation. Green
Chemistry 1999;l(l):43-55.
16 cites in April-
May 2003
Huddleston JG, Visser AE, Reichert WM, et al.
Characterization and comparison of hydrophilic and
hydrophobic room temperature ionic liquids incorporating
the imadazolium cation. Green Chemistry 2001;3(4): 156-
164.
9 cites in July-
August 2004
Swatloski RP, et al. Ionic liquids are not always green:
hydrolysis of l-butyl-3-methylimidazolium
hexafluorophosphate. Green Chemistry 2003;5(4):36\-363.
11 in November-
December 2006
Li CJ, Chen L. Organic chemistry in water. Chemical
Society Reviews 2006;35(l):68-82.
4 in November-
December 2007
Polshettiwar V, Varma RS. Biginelli reaction in aqueous
medium: a greener and sustainable approach to substituted
3,4-dihydropyrimidin-2(lH)-ones. Tetrahedron Letters
2007;48(41):7343-7346.
4 in November-
December 2007
Polshettiwar V, Varma RS. Tandem bis-aldol reaction of
ketones: a facile one-pot synthesis of 1,3-dioxanes in
aqueous medium. Journal of Organic Chemistry
2007;72(19):7420-7422.
11 in November-
December 2008
Polshettiwar V, Varma RS. Microwave-assisted organic
synthesis and transformations using benign reaction media.
Accounts of Chemical Research 2008;41(5):629-639.
Engineering
6 in July-August
2000
Clancy JL, et al. UV light inactivation of Cryptosporidium
oocysts. Journal of the American Water Works Association
1998;90(9):92-102.
5 in January-
February 2008
von Blottnitz H, Curran MA. A review of assessments
conducted on bio-ethanol as a transportation fuel from a net
energy, greenhouse gas, and environmental life cycle
perspective. Journal of Cleaner Production
2007;15(7):607-619.
Plant &
Animal
Science
7 in September
2005
Walsh CJ, et al. The urban stream syndrome: current
knowledge and the search for a cure. Journal of the North
American Benthological Society 2005;24(3):706-723.
14
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Author Self-Citation
Self-citations are journal article references to articles from that same author (i.e., the first author).
Because higher author self-citation rates can inflate the number of citations, the author self-
citation rate was calculated for the STS papers. Of the 18,684 total cites, 658 are author self-
cites—a 3.5% author self-citation rate. Garfield and Sher3 found that authors working in
research-based disciplines tend to cite themselves on the average of 20% of the time.
MacRoberts and MacRoberts4 claim that approximately 10% to 30% of all the citations listed
fall into the category of author self-citation. Kovacic and Misak5 recently reported a 20% author
self-citation rate for medical literature. Therefore, the 3.5% self-cite rate for the STS papers is
well below the range for author self-citation.
Highly Cited Researchers
A search of Thomson ReutefsISIHighlyCited.com revealed that 13 (1.2%) of the 1,097 authors
of the STS papers are highly cited researchers. ISIHighlyCited.com is a database of the world's
most influential researchers who have made key contributions to science and technology during
the period from 1981 to 1999. The highly cited researchers identified during this analysis of the
STS publications are presented in Table 20.
Table 20. Highly Cited Researchers Authoring STS Publications
Highly Cited
Researcher
Abraham, Michael H.
Calabrese, Joe C.
Cordell, Geoffrey A.
Groffman, Peter Mark
Haddon, Robert C.
Katritzky, Alan R.
Komarneni, Sridhar
Matyjaszewski,
Krzysztof
Paquette, Leo Armand
Paul, Donald R.
Affiliation ESI Field
University College London
E.I. Dupont de Nemours Co.
University of Illinois-Chicago
Institute of Ecosystem Studies
University of California-Riverside
University of Florida
Pennsylvania State University
Carnegie Mellon University
Ohio State University
University of Texas-Austin
Chemistry
Chemistry
Agricultural Sciences
Environment/Ecology
Physics
Chemistry
Materials Science
Chemistry
Chemistry
Materials Science
Chemistry
Garfield E, Sher IH. New factors in the evaluation of scientific literature through citation indexing. American
Documentation 1963;18(July):195-210.
4 MacRoberts MH, MacRoberts BR. Problems of citation analysis: a critical review. Journal of the American
Society of Information Science 1989;40(5):342-349.
5 Kavaci N, Misak A. Author self-citation in medical literature. Canadian Medical Association Journal
2004;170(13):1929-1930.
15
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Highly Cited
Researcher
Pielke Sr., Roger A.
Suidan, Makram T.
Wang, Yue J.
Total = 13
Affiliation
University of Colorado-Boulder
University of Cincinnati
Virginia Polytechnic Institute and
State University
ESI Field
Geosciences
Environment/Ecology
Engineering
Nonjournal Publications (Books, Book Chapters, Reports, and Proceedings)
Seventy-one nonjournal publications (books, book chapters, reports, and proceedings) produced
by the program from 1998 to 2008 were included in the analysis. Of these 71 nonjournal
publications, 34 (47.9%) have been cited at least once in a journal. The 71 publications were cited
1,637 times in the journals covered by Thomson Reuter's/57 Web of Science. The authors of the
nonjournal publications cited themselves 17 times, a 1.0% self citation rate, which is well below
the 10-30% range report in the literature for author self-citation. Application of the ESI fields and
highly cited benchmarks used for journal papers to the nonjournal publications, indicated that 6
(8.4%) of the nonjournal publications were highly cited when using the ESI criteria for the top
10% of highly cited publications. This number is slightly less than the 7 publications expected to
meet this threshold. Three of the nonjournal publications (4.2%) met the ESI criteria for the top
1%, and one (1.4%) of the nonjournal publications met the ESI criteria for the top 0.1%. These
numbers are 4 and 14 times higher than the numbers expected. None of the nonjournal
publications met the ESI criteria for the top 0.01%, which is not surprising, given that the number
expected to meet this threshold is 0.7.
Patents
There were 29 U.S. patents and 1 international patent issued to and 3 patent applications filed by
investigators from 1998 to 2008 for research that was conducted under EPA's STS research
program. Seventeen (58.6%) of the 29 U.S. patents have been referenced 115 times by other U.S.
patents. These patents and patent applications, along with the patents that reference them, are
listed in Table 21.
Table 21. Patents and Patent Applications from the
STS Research Program (1996-2006)
Patent No.
or Applica-
tion No.
5,907,075
Inventor(s)
Subramanian
B, Clark MC
Title
Solid acid
supercritical
alkylation
reactions using
carbon dioxide
Issue
Date or
Applica-
tion Date
5/25/99
No. of Patents that Referenced This Patent
Referenced by 10 patents:
(1) 7,090,830 Drug condensation aerosols and
kits
(2) 6,924,407 Pressure-tuned solid catalyzed
heterogeneous chemical reactions
16
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
6,013,774
6,039,878
6,103,121
Inventor(s)
Meister JJ,
Chen MJ
Sikdar S, Vane
L
Bhattacharyya
D, Bachas LG,
Cullen L,
Hestekin JA,
Sikdar S
Title
and/or other
co-solvents
Biodegradable
plastics and
composites
from wood
Recovery of
volatile organic
compounds in
water by
pervaporation
Membrane -
based sorbent
for heavy metal
sequestration
Issue
Date or
Applica-
tion Date
1/11/00
3/21/00
8/15/00
No. of Patents that Referenced This Patent
(3) 6,914,105 Continuous process for making
polymers in carbon dioxide
(4) 6,887,813 Method for reactivating solid
catalysts used in alkylation reactions
(5) 6,806,332 Continuous method and apparatus
for separating polymer from a high pressure
carbon dioxide fluid stream
(6) 6,579,821 Method for reactivating solid
catalysts used in alkylation reactions
(7) 6,103,948 Solid catalyzed isoparaffin
alkylation at supercritical fluid and near-
supercritical fluid conditions
(8) 7,458,374 Method and apparatus for
vaporizing a compound
(9) 7,410,620 Apparatus for continuous
production of polymers in carbon dioxide
(10) 7,407,905 Method for reactivating catalysts
and a method for recycling supercritical fluids
used to reactivate the catalysts
Referenced by 1 patent:
(1) 6,488,997 Degradable composite material, its
disposable products and processing method
thereof
Referenced by 3 patents:
(1) 6,858,145 Method of removing organic
impurities from water
(2) 6,335,202 Method and apparatus for on-line
measurement of the permeation characteristics of
a permeant through dense nonporous membrane
(3) 6,264,726 Method of filtering a target
compound from a first solvent that is above its
critical density
Referenced by 3 patents:
(1) 6,544,419 Method of preparing a composite
polymer and silica-based membrane
(2) 6,544,418 Preparing and regenerating a
composite polymer and silica-based membrane
(3) 6,533,938 Polymer enhanced diafiltration:
filtration using PGA
17
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
6,117,328
6,138,456
6,139,742
6,306,301
Inventor(s)
Sikdar SK, Ji
W, Wang S-t
Garris CA
Bhattacharyya
D, Bachas LG,
Cullen L,
Hestekin JA,
Sikdar SK
Bhattacharyya
D, Ritchie SM,
Bachas LG,
Hestekin JA,
Sikdar SK
Title
Adsorbent-
filled
membranes for
pervaporation
Pressure
exchanging
ejector and
methods of use
Membrane -
based sorbent
for heavy metal
sequestration
Silica-based
membrane
sorbent for
heavy metal
sequestration
Issue
Date or
Applica-
tion Date
9/12/00
10/31/00
10/31/00
10/23/01
No. of Patents that Referenced This Patent
Referenced by 5 patents:
(1) 7,014,681 Flexible and porous membranes
and adsorbents, and method for the production
thereof
(2) 6,779,529 Cigarette filter
(3) 6,740,143 Mixed matrix nanoporous carbon
membranes
(4) 6,706,531 Device for conditioning a polluted
soil-sample-method of analysis by pyrolysis
(5) 6,500,233 Purification of p-xylene using
composite mixed matrix membranes
Referenced by 9 patents:
(1) 7,334,427 Ejector with tapered nozzle and
tapered needle
(2) 7,143,602 Ejector-type depressurizer for
vapor compression refrigeration system
(3) 7,137,243 Constant volume combustor
(4) 6,966,199 Ejector with throttle controllable
nozzle and ejector cycle using the same
(5) 6,904,769 Ejector-type depressurizer for
vapor compression refrigeration system
(6) 6,729,158 Ejector decompression device with
throttle controllable nozzle
(7) 6,550,265 Ejector cycle system
(8) 6,471,489 Supersonic 4-way self-
compensating fluid entrainment device
(9) 6,434,943 Pressure exchanging compressor-
expander and methods of use
Referenced by 5 patents:
(1) 7,049,366 Acrylic acid composition and its
production process, and process for producing
water-absorbent resin using this acrylic acid
composition, and water-absorbent resin
(2) 7,009,010 Water-absorbent resin and
production process therefor
(3) 6,544,419 Method of preparing a composite
polymer and silica-based membrane
(4) 6,544,418 Preparing and regenerating a
composite polymer and silica-based membrane
(5) 6,306,301 Silica-based membrane sorbent for
heavy metal sequestration
Referenced by 2 patents:
(1) 6,544,419 Method of preparing a composite
polymer and silica-based membrane
(2) 6,544,418 Preparing and regenerating a
composite polymer and silica-based membrane
18
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
Inventor(s)
Title
Issue
Date or
Applica-
tion Date
No. of Patents that Referenced This Patent
6,434,943
Garris CA
Pressure
exchanging
compressor-
expander and
methods of use
8/20/02
Referenced by 6 patents:
(1) 7,137,243 Constant volume combustor
(2) 7,104,068 Turbine component with enhanced
stagnation prevention and corner heat
distribution
(3) RE39,217 Centrifugal pump having oil
misting system with pivoting blades
(4) 6,663,991 Fuel cell pressurization system
(5) 6,608,418 Permanent magnet turbo-generator
having magnetic bearings
(6) 6,551,055 Centrifugal pump having oil
misting system with pivoting blades
6,512,060
Matyjaszewski
K, Gaynor SG,
CocoS
Atom or group
transfer radical
polymerization
1/28/03
Referenced by 15 patents:
(1) 7,422,836 Dissolution rate modifiers for
photoresist compositions
(2) 7,332,550 Stabilization of transition metal
complexes for catalysis in diverse environments
(3) 7,244,788 Polymer and process for producing
polymers
(4) 7,199,177 Pigment composition containing
ATRP polymers
(5) 7,157,530 Catalyst system for controlled
polymerization
(6) 7,125,938 Atom or group transfer radical
polymerization
(7) 7,064,166 Process for monomer sequence
control in polymerizations
(8) 7,056,455 Process for the preparation of
nanostructured materials
(9) 7,049,373 Process for preparation of graft
polymers
(10) 7,019,082 Polymers, supersoft elastomers
and methods for preparing the same
(11) 6,887,962 Processes based on atom (or
group) transfer radical polymerization and novel
(co)polymers having useful structures and
properties
(12) 6,790,919 Catalyst system for controlled
polymerization
(13) 6,759,491 Simultaneous reverse and normal
initiation of ATRP
(14) 6,720,395 Method for producing a stellar
polymer
(15) 6,627,314 Preparation of nanocomposite
structures by controlled polymerization
19
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
Inventor(s)
Title
Issue
Date or
Applica-
tion Date
No. of Patents that Referenced This Patent
6,521,198
Yan YS, Cheng
XL, Wang ZB
Metal surfaces
coated with
molecular sieve
for corrosion
resistance
2/18/03
Referenced by 1 patent:
(1) 7,179,547 High aluminum zeolite coatings on
corrodible metal surfaces
6,538,091
Matyjaszewski
K, Gaynor SG,
Coco S
Atom or group
transfer radical
polymerization
3/25/03
Referenced by 12 patents:
(1) 7,332,550 Stabilization of transition metal
complexes for catalysis in diverse environments
(2) 7,157,530 Catalyst system for controlled
polymerization
(3) 7,125,938 Atom or group transfer radical
polymerization
(4) 7,064,166 Process for monomer sequence
control in polymerizations
(5) 7,056,455 Process for the preparation of
nanostructured materials
(6) 7,049,373 Process for preparation of graft
polymers
(7) 7,034,065 InkJet ink composition
(8) 7,019,082 Polymers, supersoft elastomers and
methods for preparing the same
(9) 6,887,962 Processes based on atom (or
group) transfer radical polymerization and novel
(co)polymers having useful structures and
properties
(10) 6,790,919 Catalyst system for controlled
polymerization
(11) 6,759,491 Simultaneous reverse and normal
initiation of ATRP
(12) 6,713,530 InkJet ink composition
6,541,580
Matyjaszewski
K, Gaynor SG,
Coco S
Atom or group
transfer radical
polymerization
4/1/03
Referenced by 9 patents:
(1) 7,332,550 Stabilization of transition metal
complexes for catalysis in diverse environments
(2) 7,125,938 Atom or group transfer radical
polymerization
(3) 7,064,166 Process for monomer sequence
control in polymerizations
(4) 7,056,455 Process for the preparation of
nanostructured materials
(5) 7,049,373 Process for preparation of graft
polymers
(6) 6,887,962 Processes based on atom (or
group) transfer radical polymerization and novel
(co)polymers having useful structures and
properties
20
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
6,544,418
6,544,419
6,562,605
6,624,262
Inventor(s)
Bhattacharyya
D, Ritchie SM,
Bachas LG,
Hestekin JA,
Sikdar SK
Bhattacharyya
D, Ritchie SM,
Bachas LG,
Hestekin JA,
Sikdar SK
Beckman EJ,
Ghenciu EJ,
Becker NT,
Steele LM
Matyjaszewski
K, Tsarevsky N
Title
Preparing and
regenerating a
composite
polymer and
silica-based
membrane
Method of
preparing a
composite
polymer and
silica-based
membrane
Extraction of
water soluble
biomaterials
from fluids
using a carbon
dioxide/surfact
ant mixture
Polymerization
process for
ionic
monomers
Issue
TJofp nr-
4^cll^ IF1
Applica-
tion Date
4/8/03
4/8/03
5/13/03
9/23/03
No. of Patents that Referenced This Patent
(7) 6,884,748 Process for producing fluorinated
catalysts
(8) 6,790,919 Catalyst system for controlled
polymerization
(9) 6,759,491 Simultaneous reverse and normal
initiation of ATRP
Referenced by 0 patents
Referenced by 0 patents
Referenced by 0 patents
Referenced by 1 1 patents:
(1) 7,332,550 Stabilization of transition metal
complexes for catalysis in divers environments
(2) 7,300,991 Cationic conductor, its
intermediate, and lithium secondary battery using
the conductor
(3) 7,157,530 Catalyst system for controlled
polymerization
(4) 7,125,938 Atom or group transfer radical
polymerization
(5) 7,064,166 Process for monomer sequence
control in polymerizations
(6) 7,056,455 Process for the preparation of
nanostructured materials
(7) 7,049,373 Process for preparation of graft
polymers
(8) 7,019,082 Polymers, supersoft elastomers and
methods for preparing the same
21
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
Inventor(s)
Title
Issue
Date or
Applica-
tion Date
No. of Patents that Referenced This Patent
(9) 6,887,962 Processes based on atom (or
group) transfer radical polymerization and novel
(co)polymers having useful structures and
properties
(10) 6,790,919 Catalyst system for controlled
polymerization
(11) 6,759,491 Simultaneous reverse and normal
initiation of ATRP
6,624,263
Matyjaszewski
K, Wang JS
(Co) polymers
and a novel
polymerization
process based
on atom (or
group) transfer
radical
polymerization
9/23/03
Referenced by 9 patents:
(1) 7,157,530 Catalyst system for controlled
polymerization
(2) 7,125,938 Atom or group transfer radical
polymerization
(3) 7,064,166 Process for monomer sequence
control in polymerizations
(4) 7,056,455 Process for the preparation of
nanostructured materials
(5) 7,049,373 Process for preparation of graft
polymers
(6) 7,019,082 Polymers, supersoft elastomers and
methods for preparing the same
(7) 6,887,962 Processes based on atom (or
group) transfer radical polymerization and novel
(co)polymers having useful structures and
properties
(8) 6,790,919 Catalyst system for controlled
polymerization
(9) 6,759,491 Simultaneous reverse and normal
initiation of ATRP
6,627,314
Matyjaszewski
K, Pyun J
Preparation of
nanocomposite
structures by
controlled
polymerization
9/30/03
Referenced by 13 patents:
(1) 7,332,550 Stabilization of transition metal
complexes for catalysis in diverse environments
(2) 7,217,457 Composite particles, derived
conjugates, preparation method and applications
(3) 7,157,530 Catalyst system for controlled
polymerization
(4) 7,125,938 Atom or group transfer radical
polymerization
(5) 7,064,166 Process for monomer sequence
control in polymerizations
(6) 7,056,455 Process for the preparation of
nanostructured materials
(7) 7,049,373 Process for preparation of graft
polymers
(8) 7,019,082 Polymers, supersoft elastomers and
methods for preparing the same
22
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
6,663,991
6,755,975
6,759,491
6,777,374
6,881,364
Inventor(s)
Garris CA
Vane LM,
Mairal AP, Ng
A, Alvarez FR,
Baker RW
Matyjaszewski
K, Gromada J,
LiM
Sahle-
Demessie E,
Biswas P,
Gonzalez MA,
Wang Z-M,
Sikdar SK
Vane LM,
Ponangi RP
Title
Fuel cell
pressurization
system
Separation
process using
pervaporation
and
dephlegmation
Simultaneous
reverse and
normal
initiation of
ATRP
Process for
photo-induced
selective
oxidation of
organic
chemicals to
alcohols,
ketones and
aldehydes
using flame
deposited nano-
structured
photocatalyst
Hydrophilic
mixed matrix
materials
having
reversible
water
absorbing
properties
Issue
TJofp nr-
4^cll^ IF1
Applica-
tion Date
12/16/03
6/29/04
7/6/04
8/17/04
4/19/05
No. of Patents that Referenced This Patent
(9) 6,887,962 Processes based on atom (or
group) transfer radical polymerization and novel
(co)polymers having useful structures and
properties
(10) 6,858,372 Resist composition with enhanced
X-ray and electron sensitivity
(1 1) 6,797,380 Nanoparticle having an inorganic
core
(12) 6,790,919 Catalyst system for controlled
polymerization
(13) 6,759,491 Simultaneous reverse and normal
initiation of ATRP
Referenced by 0 patents
Referenced by 1 patent:
(1) 6,899,743 Separation of organic mixtures
using gas separation or pervaporation and
dephlegmation
Referenced by 0 patents
Referenced by 0 patents
Referenced by 0 patents
23
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Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
6,900,261
7,019,082
7,179,547
7,332,500
7,442,352
WO
2007/109300
A2
Application
No.
20040044152
Inventor(s)
Wool RP, Lu J,
KhotSN
Matyjaszewski
K, Pakula T
YanYS,
Beving D
Matyjaszewski
K, Tsarevsky N
Lu X-C, Wu X
Dilek C, Gulari
E, Manke CW,
Marentis RT
Matyjaszewski
K, Tsarevsky N
Title
Sheet molding
compound
resins from
plant oils
Polymers,
supersoft
elastomers and
methods for
preparing the
same
High aluminum
zeolite coatings
on corrodible
metal surfaces
Stabilization of
transition metal
complexes for
catalysis in
diverse
environments
Flue gas
purification
process using a
sorbent
polymer
composite
material
Recyclable
binders for
metal casting
molds and for
injection
molding of
metal and
ceramic parts
Polymerization
processes for
ionic
monomers
Issue
Date or
Applica-
tion Date
5/31/05
3/28/06
2/20/07
2/19/08
10/28/08
9/27/07
3/4/04
No. of Patents that Referenced This Patent
Referenced by 0 patents
Referenced by 0 patents
Reference by 0 patents
Referenced by 0 patents
Referenced by 0 patents
Referenced by 0 patents
Not applicable
24
-------
Bibliometric Analysis ofSTS Research Program Journal Articles—February 2009
Patent No.
or Applica-
tion No.
Application
No.:
2005090632
Application
No.:
20070056911
Inventor(s)
Matyjaszewski
K, Wang JS
Zhao DY, An
B
Title
Novel
(co)polymers
and a novel
polymerization
process based
on atom (or
group) transfer
radical
polymerization
Selective
removal of
toxic
compounds like
arsenic from
drinking water
Issue
Date or
Applica-
tion Date
4/28/05
3/15/07
No. of Patents that Referenced This Patent
Not applicable
Not applicable
This bibliometric analysis was prepared by
Beverly Campbell of The Scientific Consulting Group, Inc.
in Gaithersburg, Maryland
under EPA Contract No. EP-C-05-015
25
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