Filings by year

C04B 28/12: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197900
198000
198100
198200
198300
198400
198500
198600
198700
198800
198900
199000
199100
199200
199300
199400
199500
199600
199700
199800
199900
200000
200110
200210
200301
200400
200510
200613
200702
200810
200900
201010
201101
201202
201312
201411
201522
201617
201712
201814
201923
202026
202135
202233
2023618
2024917
202587
2026118

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

Recent patents

Most cited

By later US patents