Filings by year

B01J 31/22: granted patents and published applications per publication year
YearGranted patentsPublished applications
1976430
1977240
1978260
1979230
1980360
1981440
1982300
1983270
1984250
1985220
1986170
1987290
1988140
1989230
1990220
1991270
1992360
1993340
1994350
1995420
1996500
1997460
1998590
1999640
2000780
200110426
200210574
200393106
20047184
200584116
20066675
20076362
20084272
20094495
201064103
201160104
20125884
201395153
201488147
2015132183
2016143171
2017157158
2018116146
2019140198
2020138144
2021130173
2022119156
2023110131
2024126143
202574116
20263969

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