Filings by year

D21H 13/32: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197700
197810
197900
198000
198100
198200
198310
198400
198500
198600
198700
198810
198900
199000
199100
199200
199300
199400
199500
199600
199700
199800
199900
200000
200100
200200
200300
200400
200500
200600
200700
200800
200900
201000
201100
201200
201300
201401
201500
201600
201711
201800
201910
202002
202110
202211
202310
202400
202501

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents