With nearly 20,000 filings in 2003, the United States continued to be the leading source of triadic patent families.
SOURCE: Appendix Tables 6-50 and 6-51, Science and Engineering Indicators 2008, National Science Foundation, http://www.nsf.gov/statistics/seind08.
NOTES: Patents on fractional count basis, i.e., for patents with inventors from multiple countries, each country receives fractional credit based on proportion of its participating inventors. Number of patents estimated between 1998 and 2003 by OECD.
Figure 11.1. Number of triadic patent families by nationality of inventor, selected countries: 1985-2003
Figure 11.2. Share of triadic patent families by nationality of inventor, selected countries: 1985-2003
DIGEST OF KEY SCIENCE AND ENGINEERING INDICATORS 2008 – General Science and Engineering Indicators