Filings by year

B01D 5/0021: granted patents and published applications per publication year
YearGranted patentsPublished applications
197920
198000
198100
198200
198300
198400
198500
198600
198700
198800
198900
199000
199100
199200
199300
199400
199500
199600
199700
199800
199900
200000
200111
200200
200312
200410
200511
200601
200700
200811
200910
201000
201100
201200
201300
201400
201501
201600
201701
201804
201913
202020
202102
202210
202323
202440

By publication year. Applications have been published since 2001.