Patent applications are worldwide patent applications filed through the Patent Cooperation Treaty procedure or with a national patent office.
| Date | Valeur | Modifier, % |
|---|---|---|
| 1996 | 12 | 100,00 % |
| 1995 | 6 | -40,00 % |
| 1994 | 10 | -33,33 % |
| 1993 | 15 | -40,00 % |
| 1991 | 25 | 150,00 % |
| 1990 | 10 | 233,33 % |
| 1989 | 3 | -50,00 % |
| 1975 | 6 | 100,00 % |
| 1974 | 3 | 50,00 % |
| 1973 | 2 | 100,00 % |
| 1968 | 1 | -50,00 % |
| 1966 | 2 |
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