Filings by year

D04B 15/61: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197700
197820
197900
198000
198100
198200
198310
198410
198510
198600
198710
198810
198910
199000
199120
199200
199320
199400
199500
199610
199710
199810
199900
200010
200110
200200
200300
200411
200523
200621
200700
200800
200900
201010
201101
201210
201300
201411
201500
201601
201700
201810

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents