B01D 33/705
With internal recirculation through the filter
Official title: {with internal recirculation through the filter}
B01D33/705 (With internal recirculation through the filter) appears on 33 US grants and 8 published applications in this corpus.
Search patents in B01D- Granted patents
- 33
- Published applications
- 8
- Assignees
- 29
- Inventors
- 48
- Latest grant
- 10 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Process for treating a slurry of cellulosic material45US 4,046,621 ACanadian International Paper Company · 1977
- Method and means for separation of liquids from a mixture of solids and liquids35US 3,970,552 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1976
- Filtering machine for fibrous substances having revolving cone-shaded filters32US 5,087,358 A1992
- Process for treating a slurry of cellulosic material29US 4,014,736 ACanadian International Paper Company · 1977
- Measurement of BSW in crude oil streams20US 4,184,952 AShell Oil Company · 1980