Filings by year

C04B 7/425: granted patents and published applications per publication year
YearGranted patentsPublished applications
198910
199000
199100
199200
199300
199400
199500
199600
199700
199830
199900
200010
200120
200200
200311
200400
200501
200600
200700
200800
200900
201000
201101
201200
201311
201400
201502
201600
201701
201821
201900
202001
202101
202200
202310
202402
202526
202611

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

Recent patents

Most cited

By later US patents