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Agricultural Biotechnology Intellectual Property: Standard Tables
Year links take you to the relevant patent list within the Detail table.

Utility patents by year, U.S. government (Federal and State) only
Year Utility patents
 Number
1976 3
1977 1
1978 2
1979 4
1980 8
1981 6
1982 6
1983 6
1984 5
1985 4
1986 5
1987 15
1988 7
1989 11
1990 16
1991 25
1992 28
1993 25
1994 22
1995 29
1996 22
1997 37
1998 48
1999 46
2000 40
All years 421
Date created: 5/27/2004 1:11:32 PM

 
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Updated date: August 26, 2004