B01D 25/307
With internal recirculation through the filtering element
Official title: {with internal recirculation through the filtering element (B01D37/02 takes precedence)}
B01D25/307 (With internal recirculation through the filtering element) appears on 8 US grants and 2 published applications in this corpus.
Search patents in B01D- Granted patents
- 8
- Published applications
- 2
- Assignees
- 1
- Inventors
- 4
- Latest grant
- 20 Nov 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
By publication year. Applications have been published since 2001.
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