Filings by year

F42B 12/44: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976140
197710
197840
197910
198010
198130
198240
198330
198470
198500
198600
198710
198800
198920
199020
199120
199270
199310
199420
199500
199620
199720
199830
199910
200020
200110
200210
200310
200430
200525
200603
200742
200824
200933
201016
201138
201279
201382
201457
201587
201694
201769
201853
201931
202042
202135
202242
202332
202420
202512
202610

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

Recent patents

Most cited

By later US patents