Filings by year

C08G 18/81: granted patents and published applications per publication year
YearGranted patentsPublished applications
197640
1977100
197820
197960
198080
198170
1982100
198380
1984130
1985180
1986230
1987170
1988240
1989290
1990160
1991240
1992190
1993120
1994120
199590
1996130
199790
1998140
1999140
2000130
2001105
20022318
20032034
20041541
20052034
20062737
20071031
20081633
20091532
20102344
20112031
20122434
20132231
20143424
20153429
20162439
20172343
20182740
20193334
20202754
20213959
20223938
20233338
20243244
20252022
20261421

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Subgroups

Granted patents

Recent patents

Most cited

By later US patents