B01D 29/906
Special treatment of the feed stream before contacting the filtering element
Official title: {Special treatment of the feed stream before contacting the filtering element, e.g. cutting (B01D35/24, B01D37/02, B01D37/03 take precedence)}
B01D29/906 (Special treatment of the feed stream before contacting the filtering element) appears on 62 US grants and 68 published applications in this corpus.
Search patents in B01D- Granted patents
- 62
- Published applications
- 68
- Assignees
- 45
- Inventors
- 114
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 4 | 4 |
| 2005 | 1 | 3 |
| 2006 | 2 | 2 |
| 2007 | 2 | 7 |
| 2008 | 4 | 3 |
| 2009 | 2 | 4 |
| 2010 | 2 | 2 |
| 2011 | 3 | 5 |
| 2012 | 4 | 4 |
| 2013 | 0 | 3 |
| 2014 | 6 | 4 |
| 2015 | 2 | 2 |
| 2016 | 3 | 3 |
| 2017 | 2 | 5 |
| 2018 | 3 | 2 |
| 2019 | 3 | 1 |
| 2020 | 0 | 1 |
| 2021 | 3 | 4 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Wire mesh filter123US 5,849,188 ABaker Hughes Incorporated · 1998
- Well casing assembly with erosion protection for inner screen89US 5,881,809 AUnited States Filter Corporation · 1999
- Air filter assembly47US 6,833,023 B1International Liner Co., Inc. · 2004
- Wire mesh filter including a protective jacket45US 5,624,560 ABaker Hughes Incorporated · 1997
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