Patent applications are worldwide patent applications filed through the Patent Cooperation Treaty procedure or with a national patent office.
| Date | Value | Change, % |
|---|---|---|
| 1996 | 28 | -49.09% |
| 1995 | 55 | 25.00% |
| 1993 | 44 | 4.76% |
| 1992 | 42 | -30.00% |
| 1991 | 60 | 36.36% |
| 1990 | 44 | 12.82% |
| 1989 | 39 | 2.63% |
| 1988 | 38 | -7.32% |
| 1987 | 41 | -12.77% |
| 1986 | 47 | 23.68% |
| 1985 | 38 | 11.76% |
| 1984 | 34 |
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