Filings by year

B01D 33/56: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197710
197810
197930
198020
198110
198200
198320
198400
198530
198610
198700
198810
198900
199020
199110
199210
199300
199410
199530
199600
199700
199800
199900
200010
200100
200200
200333
200402
200520
200603
200720
200810
200910
201001
201100
201201
201301
201421
201510
201611
201700
201800
201900
202011
202101
202201
202302
202432
202511
202611

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Recent patents

Most cited

By later US patents