B01D 2201/304
Seals or gaskets
B01D2201/304 (Seals or gaskets) appears on 307 US grants and 393 published applications in this corpus.
Search patents in B01D- Granted patents
- 307
- Published applications
- 393
- Assignees
- 177
- Inventors
- 665
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 8 |
| 2003 | 11 | 18 |
| 2004 | 5 | 7 |
| 2005 | 6 | 5 |
| 2006 | 6 | 12 |
| 2007 | 8 | 12 |
| 2008 | 3 | 5 |
| 2009 | 2 | 11 |
| 2010 | 3 | 8 |
| 2011 | 7 | 2 |
| 2012 | 9 | 4 |
| 2013 | 8 | 13 |
| 2014 | 6 | 7 |
| 2015 | 4 | 10 |
| 2016 | 5 | 9 |
| 2017 | 7 | 23 |
| 2018 | 8 | 21 |
| 2019 | 19 | 15 |
| 2020 | 11 | 32 |
| 2021 | 19 | 40 |
| 2022 | 21 | 47 |
| 2023 | 30 | 20 |
| 2024 | 34 | 30 |
| 2025 | 24 | 16 |
| 2026 | 10 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filter assembly25 Aug 2026US 12,716,481 B2Filtran LLC
- Filter valve assembly18 Aug 2026US 12,708,868 B2Hamilton Sundstrand Corporation
- Filter element with biplanar O-ring14 Jul 2026US 12,678,718 B2Parker-Hannifin Corporation
- Water filter system and method16 Jun 2026US 12,654,117 B2
- Multistage filter with hydrophobic screen28 Apr 2026US 12,611,622 B2Atmus Filtration Inc.
- Filter Element with Biplanar O-Ring1 Oct 2026US 2026/0295481 A1Parker-Hannifin Corporation
- Filter element endplate oriented on head in filter24 Sep 2026US 2026/0284559 A1Atmus Filtration Inc.
- Filter Element17 Sep 2026US 2026/0273441 A1Hydac Filtertechnik GmbH
- Filter Element And Filter Device10 Sep 2026US 2026/0263970 A1Hydac Filtertechnik GmbH
- Spin-On Filter with Single Piece Housing and Snap-Together Assembly20 Aug 2026US 2026/0241311 A1Baldwin Filters, Inc.
Most cited
By later US patents
- Fluid filter system524US 8,272,516 B2Advanced Filtration Systems Inc. · 2012
- Detachment lock for a bolt connection130US 5,176,483 AInq. Walter Hengst GmbH & Co. · 1993
- Fluid filter cartridge with replaceable filter element104US 5,342,519 ADonaldson Company, Inc. · 1994
- Reversible filter element87US 5,645,718 AParker-Hannifin Corporation · 1997
- Reusable liquid filter assembly85US 5,066,391 A1991