Filings by year

F04B 1/146: granted patents and published applications per publication year
YearGranted patentsPublished applications
197620
197700
197800
197910
198000
198110
198210
198300
198430
198500
198620
198720
198860
198920
199020
199100
199200
199310
199400
199510
199620
199780
199870
199970
200070
200151
200275
200366
200445
200544
200625
200715
200862
200923
201034
201125
201226
201346
2014613
2015616
201679
20171324
2018119
2019811
20201212
20211417
20221418
2023157
202485
202556
202696

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

Subgroups

Granted patents