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U.S. patent citations to science and engineering articles rose rapidly through the late 1990s, with the largest increases seen in citations to academic articles in the biomedical and clinical medicine fields.

SOURCE: Appendix Table 5-66, Science and Engineering Indicators 2006, National Science Foundation, http://www.nsf.gov/statistics/seind06.

NOTES: Citations on fractional count basis. Citation counts based on a 6-year window with 2-year lag, e.g., citations for 2002 are references in U.S. patents issued in 2002 to articles published in 1995-2000. Sector determined by cited paper’s institutional address. Scientific field determined by ipIQ’s classification.

Figure 12. Number of citations to U.S. articles by patents issued by the U.S. Patent Office, by field and sector of article: 1995-2004

DIGEST OF KEY SCIENCE AND ENGINEERING INDICATORS 2008 – General Science and Engineering Indicators

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