Filings by year

C07D 231/18: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976220
1977220
1978250
197980
1980110
1981130
1982110
1983170
1984160
1985150
198680
1987120
1988100
1989140
1990230
1991170
199290
1993190
199470
1995170
1996160
1997180
1998240
1999310
2000320
2001333
20023328
20032722
20041552
20052145
20061842
20072135
20081843
20092845
20103443
20112739
20123344
20134045
20144645
20154333
20162831
20173940
20182839
20192738
20203340
20212746
20222333
20232344
20242328
20252423
20261616

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