Filings by year

B01D 33/642: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197910
198020
198100
198200
198310
198400
198500
198610
198700
198800
198920
199000
199110
199220
199320
199410
199510
199610
199730
199810
199900
200000
200110
200200
200300
200400
200500
200600
200700
200811
200900
201000
201100
201200
201300
201401
201501
201611
201700
201800
201910
202000
202100
202201
202300
202400
202510

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents