Filings by year

F02N 15/066: granted patents and published applications per publication year
YearGranted patentsPublished applications
197910
198000
198100
198210
198300
198400
198510
198600
198720
198820
198960
1990120
1991190
1992120
199340
199410
199510
199610
199730
199840
199950
200010
200140
200232
200311
200416
200552
200611
200710
200801
200911
201001
201111
201212
201301
201400
201531
201601
201721
201800
201911

By publication year. Applications have been published since 2001.