B01D 2271/027
Radial sealings
B01D2271/027 (Radial sealings) appears on 564 US grants and 613 published applications in this corpus.
Search patents in B01D- Granted patents
- 564
- Published applications
- 613
- Assignees
- 151
- Inventors
- 780
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 4 |
| 2002 | 11 | 12 |
| 2003 | 8 | 8 |
| 2004 | 9 | 14 |
| 2005 | 6 | 12 |
| 2006 | 9 | 15 |
| 2007 | 10 | 15 |
| 2008 | 9 | 15 |
| 2009 | 11 | 18 |
| 2010 | 10 | 18 |
| 2011 | 24 | 16 |
| 2012 | 16 | 17 |
| 2013 | 17 | 13 |
| 2014 | 16 | 31 |
| 2015 | 15 | 25 |
| 2016 | 23 | 31 |
| 2017 | 17 | 30 |
| 2018 | 26 | 31 |
| 2019 | 40 | 42 |
| 2020 | 37 | 30 |
| 2021 | 30 | 38 |
| 2022 | 27 | 34 |
| 2023 | 20 | 40 |
| 2024 | 39 | 37 |
| 2025 | 40 | 40 |
| 2026 | 18 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- 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
- Crankcase ventilation element29 Sep 2026US 12,747,684 B2Atmus Filtration Inc.
- Adapter element and retaining device for an air/oil separator of a vacuum pump22 Sep 2026US 12,741,244 B2Busch Produktions GmbH
- Air purifier8 Sep 2026US 12,729,867 B2Shenzhen Chenbei Technology Co., Ltd.
- 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.
- Filter elements, related filter assembly and filter package10 Sep 2026US 2026/0263981 A1Donaldson Company, Inc.
- Filter element and filter device27 Aug 2026US 2026/0249224 A1Mann+Hummel GmbH
- Air Purifier27 Aug 2026US 2026/0251347 A1Shenzhen Chenbei Technology Co., Ltd.
Most cited
By later US patents
- 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
- Reverse flow air filter arrangement and method292US 5,613,992 ADonaldson Company, Inc. · 1997
- Filter arrangement; sealing system; and methods288US 6,350,291 B1Donaldson Company, Inc. · 2002
- Cylindrical air filter with lightweight housing and radially directed seal282US 4,720,292 ADonaldson Company, Inc. · 1988