B01D 2201/20
Pressure-related systems for filters
B01D2201/20 (Pressure-related systems for filters) appears on 323 US grants and 302 published applications in this corpus.
Search patents in B01D- Granted patents
- 323
- Published applications
- 302
- Assignees
- 249
- Inventors
- 692
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 7 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 15 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 0 |
| 2002 | 7 | 2 |
| 2003 | 3 | 14 |
| 2004 | 5 | 8 |
| 2005 | 6 | 14 |
| 2006 | 10 | 6 |
| 2007 | 8 | 14 |
| 2008 | 3 | 4 |
| 2009 | 4 | 10 |
| 2010 | 10 | 10 |
| 2011 | 3 | 8 |
| 2012 | 15 | 12 |
| 2013 | 7 | 5 |
| 2014 | 6 | 6 |
| 2015 | 5 | 6 |
| 2016 | 2 | 9 |
| 2017 | 5 | 12 |
| 2018 | 8 | 13 |
| 2019 | 10 | 12 |
| 2020 | 8 | 23 |
| 2021 | 17 | 29 |
| 2022 | 19 | 21 |
| 2023 | 24 | 18 |
| 2024 | 15 | 20 |
| 2025 | 13 | 17 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Candle filter device6 Oct 2026US 12,752,222 B2Lenzing Aktiengesellschaft
- 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
- Method for purifying liquid and system for the implementation thereof11 Aug 2026US 12,702,952 B2Electrophor, Inc.
- Slurry filter assembly9 Jun 2026US 12,649,117 B2Precision Planting LLC
- Filtration apparatus and method of controlling filtration apparatus1 Oct 2026US 2026/0295479 A1Renasys AS
- Positive pressure filtration apparatus and method20 Aug 2026US 2026/0241314 A1Scientific Plastic Products, Inc.
- Flash-filtration apparatus and experimental platform30 Jul 2026US 2026/0219144 A1Shenzhen Jingtai Technology Co., Ltd.
- Filter for hydraulic fluids for hydraulic circuits18 Jun 2026US 2026/0166451 A1Mp Filtri S.P.A.
- Filter device with burst-proof function11 Jun 2026US 2026/0158424 A1PA.E Machinery Industrial Co., Ltd.
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