F01L 3/18
Liquid cooling of valve
F01L3/18 (Liquid cooling of valve) appears on 28 US grants and 21 published applications in this corpus.
Search patents in F01L- Granted patents
- 28
- Published applications
- 21
- Assignees
- 23
- Inventors
- 72
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 5 |
| 2021 | 2 | 3 |
| 2022 | 4 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Poppet valve24 Feb 2026US 12,560,110 B2Eaton Intelligent Power Limited
- Hollow poppet valve and method of manufacturing8 Jul 2025US 12,352,188 B2Eaton Intelligent Power Limited
- Internal combustion engine with at least one hollow-head valve28 Nov 2023US 11,828,207 B2Mahle International GmbH
- Method for manufacturing engine poppet valve27 Dec 2022US 11,536,167 B2Nittan Valve Co., Ltd.
- Engine cooling system including cooled exhaust seats13 Sep 2022US 11,441,512 B2Cummins Inc.
- Hollow poppet valve and method of manufacturing1 Aug 2024US 2024/0254900 A1Eaton Intelligent Power Limited
- Poppet Valve11 Jan 2024US 2024/0011567 A1Eaton Intelligent Power Limited
- Combustion-chamber structure of engine7 Oct 2021US 2021/0310401 A1Mazda Motor Corporation
- Method for Manufacturing Engine Poppet Valve2 Sep 2021US 2021/0270154 A1Nittan Valve Co., Ltd.
- Engine cooling system including cooled exhaust seats19 Aug 2021US 2021/0254580 A1Cummins Inc.
Most cited
By later US patents
- Cooled engine valve20US 4,169,488 ACaterpillar Tractor Co. · 1979
- Mushroom valve housing with fluid coolant circulation for internal combustion engines16US 4,182,282 ASociete d'Etudes de Machines Thermiques S.E.M.T. · 1980
- Internal combustion piston engine10US 4,200,066 ASulzer Brothers Limited · 1980
- Cooled exhaust valve and methods of manufacture thereof8US 3,945,356 ASociete d'Etudes de Machines Thermiques · 1976
- Mushroom-type valve cooled by cooling fluid circulation7US 4,147,138 ASociete d'Etudes de Machines Thermiques · 1979