Filings by year

C01F 17/34: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197910
198010
198110
198200
198300
198400
198510
198610
198700
198800
198910
199010
199110
199220
199300
199420
199520
199610
199710
199800
199900
200020
200142
200223
200342
200414
200505
200655
200758
200817
200939
201057
201165
201256
201334
201414
201525
201632
201767
2018310
2019810
2020412
2021614
20221613
2023810
202455
202544
202630

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

Recent patents

Most cited

By later US patents