nsf.gov - Science and Engineering Indicators 2006 - Table 5-26: Share of U.S. patents citing S&E literature, by nationality of inventor: 1990, 1997, and 2003

Table 5-26

Share of U.S. patents citing S&E literature, by nationality of inventor: 1990, 1997, and 2003

(Percent distribution)

	1990		1997		2003

		Citing		Citing		Citing
	Total	literature	Total	literature	Total	literature
Nationality of inventor	(90,379)	(6,367)	(112,030)	(15,423)	(164,450)	(20,111)

Worldwide	100.0	100.0	100.0	100.0	100.0	100.0
United States	52.4	63.1	54.9	66.8	51.1	64.5
EU-15	19.5	16.5	15.7	14.8	15.1	15.0
Japan	21.6	15.2	20.7	12.0	21.6	11.2
East Asia-4	1.2	0.3	3.8	1.2	7.0	2.4
All other countries	5.3	4.9	4.9	5.2	5.2	6.9

EU = European Union

NOTES: Number of U.S. patents (in parentheses) and nationality of inventor based on U.S. patents referencing S&E articles in journals classified and tracked by Science Citation Index (SCI). East Asia-4 consists of China, Singapore, South Korea, and Taiwan. China includes Hong Kong.

SOURCES: Thomson ISI, SCI, http://www.isinet.com/products/citation/; ipIQ, Inc.; and National Science Foundation, Division of Science Resources Statistics, special tabulations.

Science and Engineering Indicators 2006

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