|
Table 4—Concentration of U.S. agricultural
biotechnology patent awards among top 10 patent holders, 1976-2000;
including adjustment for mergers and acquisitions, 1988-2000
|
| |
|
Excluding Patent Ownership of Subsidiary
Organizations |
Including
Patent Ownership of Subsidiary Organizations
(1988-2000) |
| Year |
Cumulative Ag Biotech Patents
|
Cumulative Ag Biotech Patents,
Top 10 Assignees
|
CR-10
Ratio of Patents
|
Cumulative Ag Biotech Patents, Top 10 Assignees
|
CR-10
Ratio of Patents
|
| |
|
| 1976 |
54 |
27 |
50.0 |
— |
— |
| 1977 |
130 |
53 |
40.8 |
— |
— |
| 1978 |
202 |
96 |
47.5 |
— |
— |
| 1979 |
281 |
138 |
49.1 |
— |
— |
| 1980 |
384 |
172 |
44.8 |
— |
— |
| 1981 |
494 |
204 |
41.3 |
— |
— |
| 1982 |
610 |
237 |
38.9 |
— |
— |
| 1983 |
714 |
260 |
36.4 |
— |
— |
| 1984 |
842 |
289 |
34.3 |
— |
— |
| 1985 |
1,001 |
322 |
32.2 |
— |
— |
| 1986 |
1,173 |
354 |
30.2 |
— |
— |
| 1987 |
1,428 |
396 |
27.7 |
— |
— |
| 1988 |
1,702 |
441 |
25.9 |
—
|
—
|
| 1989 |
2,037 |
493 |
24.2 |
628 |
30.8 |
| 1990 |
2,358 |
567 |
24.0 |
594 |
25.2 |
| 1991 |
2,804 |
638 |
22.8 |
689 |
24.6 |
| 1992 |
3,268 |
690 |
21.1 |
954 |
29.2 |
| 1993 |
3,788 |
765 |
20.2 |
809 |
21.4 |
| 1994 |
4,366 |
842 |
19.3 |
982 |
22.5 |
| 1995 |
4,933 |
937 |
19.0 |
1,108 |
22.5 |
| 1996 |
5,832 |
1,105 |
18.9 |
1,428 |
24.5 |
| 1997 |
6,944 |
1,258 |
18.1 |
1,726 |
24.9 |
| 1998 |
8,524 |
1,521 |
17.8 |
2,308 |
27.1 |
| 1999 |
10,222 |
1,817 |
17.8 |
4,047 |
39.6 |
| 2000 |
11,761 |
2,153 |
18.3 |
4,500 |
38.3 |
| 2001 |
11,761 |
|
|
|
|
| 2002 |
11,761 |
|
|
|
|
|
— = Not available.
|
This table is also available as an
Excel spreadsheet.
|
|
