B01D 35/143
Filter condition indicators
B01D35/143 (Filter condition indicators) appears on 676 US grants and 682 published applications in this corpus.
Search patents in B01D- Granted patents
- 676
- Published applications
- 682
- Assignees
- 420
- Inventors
- 1,543
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 5 | 0 |
| 1979 | 9 | 0 |
| 1980 | 5 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 9 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 14 | 0 |
| 2001 | 10 | 4 |
| 2002 | 14 | 10 |
| 2003 | 11 | 22 |
| 2004 | 12 | 19 |
| 2005 | 17 | 24 |
| 2006 | 6 | 25 |
| 2007 | 10 | 16 |
| 2008 | 12 | 15 |
| 2009 | 14 | 14 |
| 2010 | 13 | 11 |
| 2011 | 12 | 29 |
| 2012 | 10 | 17 |
| 2013 | 8 | 23 |
| 2014 | 11 | 16 |
| 2015 | 13 | 23 |
| 2016 | 20 | 38 |
| 2017 | 22 | 33 |
| 2018 | 15 | 36 |
| 2019 | 43 | 52 |
| 2020 | 31 | 47 |
| 2021 | 49 | 41 |
| 2022 | 26 | 46 |
| 2023 | 33 | 32 |
| 2024 | 21 | 30 |
| 2025 | 22 | 33 |
| 2026 | 21 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System, device, and method for monitoring carbon capture29 Sep 2026US 12,746,489 B2T-Mobile Innovations LLC
- Insufflator with filter loading detection device22 Sep 2026US 12,741,106 B2Novanta Medical GmbH
- Impending bypass indicator11 Aug 2026US 12,702,945 B2Pratt & Whitney Canada Corp.
- Water treatment system and method4 Aug 2026US 12,697,567 B2Drops Tech 2015 Ltd
- Filter life detection via dynamic pressure measurement4 Aug 2026US 12,697,568 B2Hydration Labs, Inc.
- Fluid filtration system with single use filter and integrated integrity test device and method of using same17 Sep 2026US 2026/0273442 A1Cytiva US LLC
- Resettable pressure differential gauge with memory17 Sep 2026US 2026/0276467 A1Mikropor Makina Sanayi Ve Ticaret Anonim Sirketi
- Filter Apparatus and Filter Element6 Aug 2026US 2026/0225012 A1Hydac Filtertechnik GmbH
- Water-cooled hollow heat sink system and method related applications30 Jul 2026US 2026/0217569 A1Pentair, Inc.
- Method for evaluating filtration filter30 Jul 2026US 2026/0220759 A1Nsk Ltd.
Most cited
By later US patents
- Device and method for monitoring the integrity of filtering installations289US 7,048,775 B2Sartorius AG · 2006
- Identification of filter media within a filtration system255US 10,143,948 B23M Innovative Properties Company · 2018
- Filter assembly and cartridge therefor146US 5,114,572 AProcess Scientific Innovations Limited · 1992
- Water filtering system with replaceable cartridge for a refrigerator138US 6,120,685 AMaytag Corporation · 2000
- Recharge and filter assembly with replaceable cartridge131US 6,235,194 B1Parker-Hannifin Corporation · 2001