Filings by year

E01C 23/20: granted patents and published applications per publication year
YearGranted patentsPublished applications
197650
197740
197860
197900
198030
198140
198210
198340
198430
198520
198670
198720
198810
198930
199060
199100
199230
199320
199460
199520
199660
199730
199850
199980
2000120
200173
200263
200343
200422
200528
200653
200763
200826
200924
2010416
201137
2012413
20131110
2014106
2015314
2016911
20171219
20181416
20191714
20201713
20211516
2022119
20231013
20241014
202569
2026115

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