F02M 37/28
With means activated by the presence of water
Official title: with means activated by the presence of water, e.g. alarms or means for automatic drainage
F02M37/28 (With means activated by the presence of water) appears on 182 US grants and 149 published applications in this corpus.
Search patents in F02M- Granted patents
- 182
- Published applications
- 149
- Assignees
- 86
- Inventors
- 393
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 2 |
| 2003 | 4 | 4 |
| 2004 | 3 | 3 |
| 2005 | 2 | 3 |
| 2006 | 1 | 6 |
| 2007 | 2 | 5 |
| 2008 | 1 | 5 |
| 2009 | 4 | 9 |
| 2010 | 3 | 7 |
| 2011 | 5 | 8 |
| 2012 | 2 | 8 |
| 2013 | 8 | 7 |
| 2014 | 6 | 8 |
| 2015 | 7 | 4 |
| 2016 | 7 | 11 |
| 2017 | 9 | 12 |
| 2018 | 5 | 8 |
| 2019 | 7 | 9 |
| 2020 | 7 | 6 |
| 2021 | 6 | 6 |
| 2022 | 9 | 9 |
| 2023 | 8 | 4 |
| 2024 | 8 | 2 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Fuel-water separation filter element and fuel filter7 Oct 2025US 12,434,179 B2Zhejiang Laien Filtration System Co., Ltd.
- On-vehicle water in fuel sensing system and related signal processing28 Jan 2025US 12,210,009 B2Donaldson Company, Inc.
- Electronic filter detection feature for liquid filtration systems21 Jan 2025US 12,203,432 B2Cummins Filtration IP, Inc.
- Fuel filter5 Nov 2024US 12,135,000 B2Ufi Filters S.P.A.
- Dewatering fuel in a diesel locomotive15 Oct 2024US 12,116,964 B2Siemens Mobility GmbH
- Diesel fuel filter13 Nov 2025US 2025/0345731 A1Hyundai Motor Company
- Electronic filter detection feature for liquid filtration systems10 Apr 2025US 2025/0116248 A1Cummins Filtration IP, Inc.
- Fuel-water separation filter element and fuel filter14 Mar 2024US 2024/0082762 A1Zhejiang Laien Filtration System Co., Ltd.
- Water drainage device, filter module, and method15 Feb 2024US 2024/0050877 A1Mann+Hummel GmbH
- Electronic filter detection feature for liquid filtration systems9 Nov 2023US 2023/0358193 A1Cummins Filtration IP, Inc.
Most cited
By later US patents
- Fuel-water separator83US 4,497,714 AStant Inc. · 1985
- Fuel filter with dual flow80US 6,113,781 AParker-Hannifin Corporation · 2000
- Automatic drain for fuel processor79US 9,684,313 B2Davco Technology, LLC · 2017
- Filter assembly77US 4,502,955 ARacor Industries, Inc. · 1985
- Self closing filter centerpost75US 5,846,417 AFleetguard, Inc. · 1998