B01D 2265/021
Anti-rotational means
B01D2265/021 (Anti-rotational means) appears on 169 US grants and 185 published applications in this corpus.
Search patents in B01D- Granted patents
- 169
- Published applications
- 185
- Assignees
- 46
- Inventors
- 280
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 3 |
| 2006 | 3 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 2 |
| 2009 | 2 | 5 |
| 2010 | 3 | 4 |
| 2011 | 4 | 1 |
| 2012 | 4 | 8 |
| 2013 | 5 | 7 |
| 2014 | 8 | 10 |
| 2015 | 6 | 21 |
| 2016 | 13 | 11 |
| 2017 | 9 | 9 |
| 2018 | 9 | 4 |
| 2019 | 10 | 11 |
| 2020 | 12 | 15 |
| 2021 | 7 | 19 |
| 2022 | 13 | 12 |
| 2023 | 10 | 7 |
| 2024 | 17 | 10 |
| 2025 | 15 | 12 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adapter element and retaining device for an air/oil separator of a vacuum pump22 Sep 2026US 12,741,244 B2Busch Produktions GmbH
- Filter element, housing for a filter system, and filter system comprising a filter element and a housing21 Jul 2026US 12,685,953 B2Mann+Hummel GmbH
- Filter system having key-fit attachment between holder and filter connector13 Jan 2026US 12,521,662 B2Caterpillar Inc.
- Air purifier23 Dec 2025US 12,502,630 B2Coway Co., Ltd.
- Filter device and method for mounting such a filter device30 Sep 2025US 12,427,466 B2Atlas Copco Airpower N.V.
- Ring filter element assembly including two ring filter elements rotationally aligned relative to each other27 Aug 2026US 2026/0249221 A1Mann+Hummel GmbH
- Filter assembly, related filter elements and housing cover23 Jul 2026US 2026/0208087 A1Donaldson Company, Inc.
- Filter device and method for mounting such a filter device25 Jun 2026US 2026/0175153 A1Atlas Copco Airpower N.V.
- Ring filter element with radially inner engagement contour for angular positioning18 Jun 2026US 2026/0166463 A1Mann+Hummel GmbH
- Coalescing filter with interface and orientation features14 May 2026US 2026/0131272 A1Caterpillar Inc.
Most cited
By later US patents
- Air cleaner assembly172US 6,039,778 ADonaldson Company, Inc. · 2000
- Respirator air filter cartridge with a replaceable filter element169US 5,222,488 ADonaldson Company, Inc. · 1993
- Twist and lock filter housing with nontorsional anti-rotation stop160US 6,402,798 B1Nelson Industries, Inc. · 2002
- Air cleaner149US 5,545,241 ADonaldson Company, Inc. · 1996
- Air cleaner; replaceable filter cartridges; and, methods141US 7,070,642 B2Donaldson Company, Inc. · 2006