Filings by year

C01F 11/22: granted patents and published applications per publication year
YearGranted patentsPublished applications
197670
197730
197860
197940
198020
198110
198230
198320
198420
198500
198600
198700
198800
198900
199020
199120
199220
199340
199410
199550
199620
199720
199840
199910
200010
200121
200252
200303
200441
200503
200632
200712
200815
200933
201012
201113
201212
201314
201457
201524
201635
201761
201826
201956
202046
202166
202226
202366
2024711
202538
202665

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

Recent patents

Most cited

By later US patents