B01D 2271/02
Gaskets, sealings
B01D2271/02 (Gaskets, sealings) appears on 1,350 US grants and 1,362 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,350
- Published applications
- 1,362
- Assignees
- 444
- Inventors
- 2,054
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 13 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 11 | 0 |
| 1995 | 9 | 0 |
| 1996 | 18 | 0 |
| 1997 | 20 | 0 |
| 1998 | 28 | 0 |
| 1999 | 27 | 0 |
| 2000 | 26 | 0 |
| 2001 | 31 | 9 |
| 2002 | 29 | 22 |
| 2003 | 19 | 26 |
| 2004 | 24 | 36 |
| 2005 | 21 | 42 |
| 2006 | 24 | 41 |
| 2007 | 29 | 31 |
| 2008 | 21 | 37 |
| 2009 | 22 | 40 |
| 2010 | 28 | 42 |
| 2011 | 39 | 39 |
| 2012 | 43 | 47 |
| 2013 | 52 | 37 |
| 2014 | 34 | 62 |
| 2015 | 37 | 49 |
| 2016 | 45 | 54 |
| 2017 | 38 | 57 |
| 2018 | 47 | 69 |
| 2019 | 69 | 75 |
| 2020 | 81 | 70 |
| 2021 | 63 | 94 |
| 2022 | 57 | 86 |
| 2023 | 59 | 87 |
| 2024 | 87 | 84 |
| 2025 | 67 | 73 |
| 2026 | 45 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Filter unit with a filter block, a damping layer and a housing, and process of manufacturing such a filter unit6 Oct 2026US 12,752,136 B2Dräger Safety AG & Co. KGaA
- Air filtration assembly6 Oct 2026US 12,752,230 B2Ufi Innovation Center S.R.L.
- Separating device with a separating element29 Sep 2026US 12,746,495 B2Mann+Hummel GmbH
- Filter system, filter mounting mechanism, and filter elements used in and with the filter system and filter mounting mechanism29 Sep 2026US 12,746,498 B2Altair (UK) Limited
- Filter element for a filter system having a resonator structure, and filter system having a resonator structure29 Sep 2026US 12,746,499 B2Mann+Hummel GmbH
- Filter element for use with dust collector & other applications8 Oct 2026US 2026/0306986 A1Donaldson Company, Inc.
- Fluid delivery module8 Oct 2026US 2026/0314292 A1Ichor Systems, Inc.
- Filter systems with filter bag assemblies including filter bags with radial seal gaskets17 Sep 2026US 2026/0273447 A1Donaldson Company, Inc.
- Filtering device and mounting structure10 Sep 2026US 2026/0263980 A1Yamashin-Filter Corp.
- Filter elements, related filter assembly and filter package10 Sep 2026US 2026/0263981 A1Donaldson Company, Inc.
Most cited
By later US patents
- Inline filter apparatus526US 5,820,646 ADonaldson Company, Inc. · 1998
- Filter arrangement; sealing system; and methods402US 6,190,432 B1Donaldson Company, Inc. · 2001
- Air filtration arrangements having fluted media constructions and methods381US 6,673,136 B2Donaldson Company, Inc. · 2004
- Air filter cartridge305US 6,966,940 B2Donaldson Company, Inc. · 2005
- Reverse flow air filter arrangement and method292US 5,613,992 ADonaldson Company, Inc. · 1997