Filings by year

C07C 311/52: granted patents and published applications per publication year
YearGranted patentsPublished applications
197640
197760
197830
197900
198040
198150
198250
198310
198450
198500
198650
198740
198850
198950
199070
199120
199220
1993110
199480
199560
199670
1997160
199860
199980
2000130
200181
20022613
20031222
20041812
200569
2006311
200765
2008710
200936
201035
201154
201245
201362
201414
201567
201688
201759
201845
201975
202036
2021412
202229
2023715
202479
202579
202646

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