Filings by year

E01C 11/226: granted patents and published applications per publication year
YearGranted patentsPublished applications
198330
198410
198500
198600
198700
198800
198900
199010
199100
199200
199300
199410
199510
199610
199700
199810
199940
200010
200110
200210
200325
200430
200523
200623
200712
200837
200925
201032
201123
201268
201324
201448
201520
201612
201744
201813
201964
202036
202123
202221
202343
202436
202545

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents