Filings by year

D21H 21/285: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197710
197810
197900
198020
198140
198250
198350
198430
198500
198600
198700
198800
198900
199000
199100
199220
199300
199410
199520
199620
199720
199820
199920
200030
200110
200255
200324
200433
200516
200602
200721
200820
200902
201002
201100
201222
201311
201413
201520
201601
201711
201803
201910
202011
202106
202231
202301
202430

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents