Filings by year

B01D 15/1821: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197730
197800
197900
198010
198120
198220
198320
198450
198530
198620
198730
198800
198900
199010
199130
199260
199330
199410
1995120
199690
199780
1998100
1999120
2000150
2001184
2002216
20031213
2004516
20051011
20061310
2007611
20081116
20091318
20101320
20111020
20121720
20132023
20141824
20151615
20162129
20172231
20182127
20193227
20202232
20212526
20221819
20231631
20242116
20251617
2026109

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

Subgroups

Granted patents

Recent patents

Most cited

By later US patents