B01D 2201/204
Systems for applying vacuum to filters
B01D2201/204 (Systems for applying vacuum to filters) appears on 237 US grants and 193 published applications in this corpus.
Search patents in B01D- Granted patents
- 237
- Published applications
- 193
- Assignees
- 163
- Inventors
- 422
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 14 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 0 |
| 2002 | 6 | 2 |
| 2003 | 3 | 14 |
| 2004 | 5 | 7 |
| 2005 | 6 | 12 |
| 2006 | 10 | 5 |
| 2007 | 8 | 13 |
| 2008 | 3 | 4 |
| 2009 | 3 | 9 |
| 2010 | 8 | 9 |
| 2011 | 3 | 6 |
| 2012 | 12 | 10 |
| 2013 | 5 | 3 |
| 2014 | 6 | 2 |
| 2015 | 5 | 6 |
| 2016 | 0 | 8 |
| 2017 | 4 | 4 |
| 2018 | 6 | 5 |
| 2019 | 4 | 5 |
| 2020 | 4 | 9 |
| 2021 | 7 | 15 |
| 2022 | 11 | 13 |
| 2023 | 9 | 11 |
| 2024 | 8 | 11 |
| 2025 | 10 | 8 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of filtrating liquid, and filtration apparatus for filtrating liquid25 Aug 2026US 12,714,956 B2Renasys AS
- Filter assembly25 Aug 2026US 12,716,481 B2Filtran LLC
- Drum washer with gravity assist drainage17 Feb 2026US 12,551,825 B2Andritz Inc.
- Positive-pressure non-agitating liquid filtration6 Jan 2026US 12,515,150 B2
- Fluid and solid material separator9 Dec 2025US 12,491,456 B2Schlumberger Technology Corporation
- Filtration apparatus and method of controlling filtration apparatus1 Oct 2026US 2026/0295479 A1Renasys AS
- Debris removal from degasser probe19 Mar 2026US 2026/0078644 A1Schlumberger Technology Corporation
- Enclosed media fluid filtration device13 Nov 2025US 2025/0345726 A1Advanced Drainage Systems, Inc.
- Filter assembly and container for collecting blood containing the same31 Jul 2025US 2025/0242094 A1Fresenius Hemocare Italia S.R.L.
- Herewith filter element and filter module19 Jun 2025US 2025/0196028 A1FAUDI Aviation GmbH
Most cited
By later US patents
- Apparatus for filtering impurities out of fluid118US 6,478,958 B1Baldwin Filters, Inc. · 2002
- Method and apparatus for cleaning filter material in a filter apparatus utilizing a suction generating nozzle99US 5,951,878 AAqua-Aerobic Systems, Inc. · 1999
- Method and apparatus for detecting a fouled fluid filter96US 5,477,731 ASociete Nationale d'Etude et de Construction de Moteurs D'Aviation "S.N.E.C.M A." · 1995
- Apparatus for filtering impurities out of fluid96US 6,787,033 B2Baldwin Filters, Inc. · 2004
- Manifold and filter assembly with filter basket89US 7,497,340 B2Stryker Corporation · 2009