B01D 36/006
Purge means
Official title: {Purge means}
B01D36/006 (Purge means) appears on 159 US grants and 171 published applications in this corpus.
Search patents in B01D- Granted patents
- 159
- Published applications
- 171
- Assignees
- 67
- Inventors
- 354
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 2 |
| 2006 | 0 | 6 |
| 2007 | 0 | 5 |
| 2008 | 1 | 3 |
| 2009 | 3 | 7 |
| 2010 | 2 | 6 |
| 2011 | 4 | 4 |
| 2012 | 4 | 10 |
| 2013 | 7 | 7 |
| 2014 | 3 | 6 |
| 2015 | 7 | 8 |
| 2016 | 6 | 10 |
| 2017 | 7 | 15 |
| 2018 | 2 | 9 |
| 2019 | 12 | 16 |
| 2020 | 15 | 18 |
| 2021 | 9 | 8 |
| 2022 | 13 | 6 |
| 2023 | 9 | 8 |
| 2024 | 4 | 6 |
| 2025 | 6 | 3 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drain valve5 May 2026US 12,618,483 B2Gardner-Denver Company
- Fluid filter system with auto drain14 Apr 2026US 12,599,856 B2Axi International Corporation
- Filter device13 Jan 2026US 12,521,653 B2Zhejiang Weitai Automobile Parts Co., Ltd.
- Positive-pressure non-agitating liquid filtration6 Jan 2026US 12,515,150 B2
- Filter assembly including separate fuel and water flow paths6 Jan 2026US 12,515,152 B2Cummins Filtration Inc.
- Removable Cartridge Design with Threaded Center Tube2 Jul 2026US 2026/0183684 A1Parker-Hannifin Corporation
- Fuel filter12 Feb 2026US 2026/0042040 A1Mahle International GmbH
- Enhanced fuel water separation using structural embossing5 Feb 2026US 2026/0034481 A1Parker-Hannifin Corporation
- Diesel fuel filter13 Nov 2025US 2025/0345731 A1Hyundai Motor Company
- Fluid system having filter connecting system between housing components16 Oct 2025US 2025/0319429 A1Caterpillar Inc.
Most cited
By later US patents
- Fuel filter with dual flow80US 6,113,781 AParker-Hannifin Corporation · 2000
- Automatic drain for fuel processor79US 9,684,313 B2Davco Technology, LLC · 2017
- Repelling-action filter unit and assembly63US 4,619,764 AParker-Hannifin Corporation · 1986
- Fuel filter assembly with standpipe having valve element61US 6,171,491 B2Parker-Hannifin Corporation · 2001
- Fuel filter assembly with modular drain bowl47US 5,236,579 AStanadyne Automotive Corp. · 1993