B01D 35/153
Anti-leakage or anti-return valves
B01D35/153 (Anti-leakage or anti-return valves) appears on 804 US grants and 795 published applications in this corpus.
Search patents in B01D- Granted patents
- 804
- Published applications
- 795
- Assignees
- 335
- Inventors
- 1,366
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 4 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 18 | 0 |
| 1997 | 14 | 0 |
| 1998 | 17 | 0 |
| 1999 | 14 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 6 |
| 2002 | 12 | 15 |
| 2003 | 20 | 22 |
| 2004 | 16 | 26 |
| 2005 | 21 | 27 |
| 2006 | 17 | 26 |
| 2007 | 12 | 21 |
| 2008 | 18 | 31 |
| 2009 | 11 | 47 |
| 2010 | 23 | 27 |
| 2011 | 14 | 23 |
| 2012 | 27 | 35 |
| 2013 | 21 | 23 |
| 2014 | 26 | 34 |
| 2015 | 24 | 24 |
| 2016 | 22 | 33 |
| 2017 | 32 | 48 |
| 2018 | 36 | 48 |
| 2019 | 35 | 36 |
| 2020 | 41 | 50 |
| 2021 | 22 | 37 |
| 2022 | 41 | 49 |
| 2023 | 39 | 41 |
| 2024 | 28 | 27 |
| 2025 | 30 | 20 |
| 2026 | 19 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water filter cartridge and head having keyed engagement8 Sep 2026US 12,728,373 B2Culligan International Company
- Filter cartridge and filter having same25 Aug 2026US 12,714,954 B2Solventum Intellectual Properties Company
- Filter assembly25 Aug 2026US 12,715,785 B2Samsung Electronics Co., Ltd.
- Filter valve assembly18 Aug 2026US 12,708,868 B2Hamilton Sundstrand Corporation
- Filter apparatus with pivotable filter cartridge11 Aug 2026US 12,702,940 B2Robert Bosch GmbH
- Filter Assembly having a Locking Mechanism with Enhanced Engagement Features8 Oct 2026US 2026/0306975 A1Parker-Hannifin Corporation
- Filter Element with Biplanar O-Ring1 Oct 2026US 2026/0295481 A1Parker-Hannifin Corporation
- Filter drainage27 Aug 2026US 2026/0250896 A1Inheriting Earth Limited
- Filter Apparatus and Filter Element6 Aug 2026US 2026/0225012 A1Hydac Filtertechnik GmbH
- Filter assembly16 Jul 2026US 2026/0199814 A1Whirlpool Corporation
Most cited
By later US patents
- Mounting head with safety shut-off valve for replaceable filter cartridge153US 5,486,288 AElkay Manufacturing Company · 1996
- Keyed filter assembly150US 6,458,269 B1Cuno Incorporated · 2002
- Filter with laterally removable element and valve means135US 5,397,462 AMatsushita Electric Industrial Co., Ltd. · 1995
- Refrigerator water filter130US 5,135,645 ARaytheon Company · 1992
- Spin-on oil filter replacement element128US 5,548,893 A1996