Filings by year

C07C 33/20: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197900
198020
198100
198210
198350
198460
198590
198660
198790
198810
198930
199060
199160
199230
199330
199430
199510
199610
199700
199830
199900
200000
200110
200200
200302
200401
200500
200622
200701
200800
200912
201012
201111
201200
201311
201404
201532
201637
201733
201815
201976
202021
202121
202223
202301
202402
202524
202620

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