F01L 3/14
By means of a liquid or solid coolant
Official title: by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
F01L3/14 (By means of a liquid or solid coolant) appears on 86 US grants and 81 published applications in this corpus.
Search patents in F01L- Granted patents
- 86
- Published applications
- 81
- Assignees
- 39
- Inventors
- 170
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 3 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 1 | 6 |
| 2013 | 2 | 3 |
| 2014 | 4 | 5 |
| 2015 | 3 | 3 |
| 2016 | 3 | 9 |
| 2017 | 9 | 4 |
| 2018 | 3 | 9 |
| 2019 | 5 | 4 |
| 2020 | 5 | 7 |
| 2021 | 4 | 11 |
| 2022 | 13 | 4 |
| 2023 | 7 | 3 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydrogen combustion engine and passenger car and commercial vehicle19 Aug 2025US 12,392,266 B2Mahle International GmbH
- Value for an internal combustion engine and production method22 Jul 2025US 12,366,182 B2Mahle International GmbH
- Valve for an overhead cam engine and an overhead cam engine assembly27 May 2025US 12,312,982 B1
- Hollow engine valve and production method thereof14 May 2024US 11,982,212 B2Fuji Oozx Inc.
- Method for producing a welded cavity valve9 Apr 2024US 11,951,561 B2Federal-Mogul Valvetrain GmbH
- Systems and methods for engine valve cooling4 Sep 2025US 2025/0277461 A1Eaton Intelligent Power Limited
- Value for an internal combustion engine and production method18 Jul 2024US 2024/0240577 A1Mahle International GmbH
- Hydrogen combustion engine and passenger car and commercial vehicle11 Jul 2024US 2024/0229687 A1Mahle International GmbH
- Hollow engine valve and production method thereof9 Nov 2023US 2023/0358151 A1Fuji Oozx Inc.
- Engine valve and manufacturing method therefor1 Jun 2023US 2023/0167755 A1Fuji Oozx Inc.
Most cited
By later US patents
- Temperature control in an ultra light engine valve31US 5,458,314 AEaton Corporation · 1995
- Ultra light engine valve30US 5,413,073 AEaton Corporation · 1995
- Engine valve and method of producing the same26US 4,597,367 ANissan Motor Co., Ltd. · 1986
- Method of manufacturing hollow engine valve25US 5,056,219 AAisan Kogyo Kabushiki Kaisha · 1991
- Engine valve and method for making the same24US 5,823,158 ATRW Inc. · 1998