Filings by year

C01F 17/253: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197810
197910
198010
198110
198200
198310
198430
198510
198610
198710
198830
198910
199030
199170
199240
199320
199420
199520
199610
199730
199820
199900
200000
200120
200202
200321
200416
200504
200645
200744
200829
200943
201056
2011010
201215
201356
201496
201547
201686
201736
2018612
2019814
20201010
2021613
2022810
2023915
20241111
202591
202654

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