Filings by year

E04G 21/0436: granted patents and published applications per publication year
YearGranted patentsPublished applications
197630
197700
197810
197910
198000
198110
198210
198310
198410
198510
198620
198720
198800
198910
199000
199110
199210
199300
199440
199510
199630
199740
199810
199920
200020
200160
200264
200312
20041112
200554
200654
200722
200806
200942
201087
201113
201260
201323
201448
2015310
2016711
20171121
2018104
2019812
2020719
20211316
20221016
2023711
20241626
2025129
2026117

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

Recent patents

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By later US patents