Filings by year

F02K 9/56: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197800
197900
198010
198110
198220
198300
198410
198510
198620
198740
198860
198900
199010
199140
199250
199350
199410
199510
199610
199700
199840
199930
200030
200170
200262
200333
200421
200522
200611
200731
200815
200937
2010411
201187
201243
201377
201472
201553
2016314
2017423
2018212
2019156
20201311
202194
20221813
20231111
2024208
202599
202656

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