B01D 46/0089
Anti-return means
Official title: {Anti-return means}
B01D46/0089 (Anti-return means) appears on 38 US grants and 42 published applications in this corpus.
Search patents in B01D- Granted patents
- 38
- Published applications
- 42
- Assignees
- 25
- Inventors
- 85
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 4 |
| 2007 | 0 | 1 |
| 2008 | 3 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 2 | 1 |
| 2013 | 2 | 2 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 7 |
| 2018 | 1 | 2 |
| 2019 | 4 | 0 |
| 2020 | 4 | 6 |
| 2021 | 0 | 1 |
| 2022 | 5 | 2 |
| 2023 | 1 | 3 |
| 2024 | 1 | 2 |
| 2025 | 3 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual air admittance valve21 Oct 2025US 12,448,762 B2
- Fuel filter cartridge with keyed profile25 Feb 2025US 12,233,364 B2Cummins Filtration IP, Inc.
- Locking mechanism for sealing member of valve with bleeding opening25 Feb 2025US 12,234,928 B2
- Dual air admittance valve28 May 2024US 11,993,925 B2
- Oil separator for a compressor and compressor assembly comprising said separator18 Jul 2023US 11,703,043 B2Ing. Enea Mattei S.P.A.
- Dual air admittance valve26 Mar 2026US 2026/0085507 A1
- Dual air admittance valve17 Apr 2025US 2025/0122707 A1
- Assembly for compressing gas, method for supplying compressed gas, and use of such an assembly26 Dec 2024US 2024/0426422 A1Atlas Copco Airpower, Naamloze Vennootschap
- Germicidal device for air and for liquids19 Dec 2024US 2024/0416264 A1
- Dual air admittance valve with locking mechanism and pressure indicator31 Aug 2023US 2023/0272866 A1
Most cited
By later US patents
- Deposition system and method61US 7,419,532 B2Caterpillar Inc. · 2008
- Filter elements arranged in waste tanks for separating substances which are harmful to the health from flowing air in connection with nuclear installations39US 4,334,900 ADelbag-Luftfilter GmbH · 1982
- Filter service system15US 7,462,222 B2Caterpillar Inc. · 2008
- Window biological and chemical contamination filter12US 6,818,035 B22004
- Filter service system and method12US 7,410,529 B2Caterpillar Inc. · 2008