Filings by year

F02M 26/55: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976250
1977400
1978510
1979560
1980610
1981500
1982360
1983310
1984360
1985160
1986150
1987190
198870
198970
199060
199190
1992120
1993190
1994120
199560
1996140
1997130
199870
199990
2000130
2001155
20021810
2003148
200445
20051515
200695
200783
200817
200915
201045
201141
201203
201322
201422
201531
201621
201713
201812
201901
202011
202100
202200
202300
202401
202511

By publication year. Applications have been published since 2001.

Subgroups

Granted patents

Recent patents

Most cited

By later US patents