B01D 2201/4076
Anti-rotational means
B01D2201/4076 (Anti-rotational means) appears on 262 US grants and 319 published applications in this corpus.
Search patents in B01D- Granted patents
- 262
- Published applications
- 319
- Assignees
- 125
- Inventors
- 566
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 5 | 5 |
| 2003 | 2 | 9 |
| 2004 | 7 | 7 |
| 2005 | 4 | 4 |
| 2006 | 3 | 7 |
| 2007 | 3 | 15 |
| 2008 | 3 | 4 |
| 2009 | 5 | 18 |
| 2010 | 8 | 13 |
| 2011 | 7 | 13 |
| 2012 | 12 | 10 |
| 2013 | 11 | 8 |
| 2014 | 8 | 12 |
| 2015 | 5 | 12 |
| 2016 | 7 | 11 |
| 2017 | 12 | 12 |
| 2018 | 7 | 10 |
| 2019 | 11 | 14 |
| 2020 | 17 | 20 |
| 2021 | 15 | 28 |
| 2022 | 16 | 28 |
| 2023 | 25 | 16 |
| 2024 | 20 | 14 |
| 2025 | 22 | 12 |
| 2026 | 8 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air purifier8 Sep 2026US 12,729,867 B2Shenzhen Chenbei Technology Co., Ltd.
- Pure water systems25 Aug 2026US 12,715,790 B2Unger Marketing International, LLC
- Filter assembly25 Aug 2026US 12,716,481 B2Filtran LLC
- Filter assembly with authenticating filter element coupling and replaceable drop-in twist locking filter element therefor2 Jun 2026US 12,643,061 B2Schroeder Industries, Inc.
- Filter cartridge assembly24 Mar 2026US 12,582,928 B2Entegris, Inc.
- Filter Assembly having a Locking Mechanism with Enhanced Engagement Features8 Oct 2026US 2026/0306975 A1Parker-Hannifin Corporation
- Water filtration assembly and method for assembly24 Sep 2026US 2026/0284561 A1Haier US Appliance Solutions, Inc.
- Air Purifier27 Aug 2026US 2026/0251347 A1Shenzhen Chenbei Technology Co., Ltd.
- Filter Apparatus and Filter Element6 Aug 2026US 2026/0225012 A1Hydac Filtertechnik GmbH
- Removable Cartridge Design with Threaded Center Tube2 Jul 2026US 2026/0183684 A1Parker-Hannifin Corporation
Most cited
By later US patents
- Twist and lock filter housing with nontorsional anti-rotation stop160US 6,402,798 B1Nelson Industries, Inc. · 2002
- Oil filter housing152US 5,738,785 ABaldwin Filters, Inc. · 1998
- Filter assembly with automatic shut-off and quick-connect filter cartridge107US 5,591,332 AOmnipure Filter Company, Inc. · 1997
- Filter assembly with automatic shut-off and quick-connect filter cartridge99US 5,744,030 AOmnipure Filter Company, Inc. · 1998
- Cartridge filter with integrated threading having anti-rotation feature97US 6,139,738 AParker-Hannifin Corporation · 2000