Filings by year

E04G 21/0445: granted patents and published applications per publication year
YearGranted patentsPublished applications
197910
198000
198100
198200
198300
198400
198510
198600
198700
198800
198900
199000
199100
199200
199300
199420
199500
199620
199710
199810
199900
200000
200110
200212
200301
200415
200524
200640
200702
200812
200903
201065
201150
201222
201314
2014312
2015518
20161420
20171623
20181310
20191211
20201232
20211925
20221855
20231626
20243353
20252920
20262513

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