Filings by year

E04G 21/168: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197710
197800
197900
198000
198120
198200
198300
198400
198510
198600
198700
198800
198900
199000
199100
199200
199320
199410
199500
199600
199710
199810
199920
200020
200100
200201
200303
200411
200511
200603
200712
200802
200920
201011
201111
201211
201303
201421
201521
201610
201703
201821
201933
202023
202112
202220
202301
202431
202502
202601

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