F02F 1/04
For air cooling
Official title: for air cooling
F02F1/04 (For air cooling) appears on 113 US grants and 85 published applications in this corpus.
Search patents in F02F- Granted patents
- 113
- Published applications
- 85
- Assignees
- 66
- Inventors
- 214
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 3 |
| 2002 | 4 | 1 |
| 2003 | 2 | 2 |
| 2004 | 1 | 5 |
| 2005 | 3 | 5 |
| 2006 | 2 | 4 |
| 2007 | 3 | 2 |
| 2008 | 5 | 5 |
| 2009 | 2 | 1 |
| 2010 | 0 | 2 |
| 2011 | 3 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 5 |
| 2014 | 2 | 5 |
| 2015 | 0 | 5 |
| 2016 | 3 | 5 |
| 2017 | 9 | 12 |
| 2018 | 8 | 7 |
| 2019 | 5 | 5 |
| 2020 | 5 | 4 |
| 2021 | 4 | 2 |
| 2022 | 1 | 2 |
| 2023 | 4 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Internal combustion engine25 Nov 2025US 12,480,457 B2
- Internal combustion engine18 Feb 2025US 12,228,091 B1
- Arrangement for an internal combustion engine and method for cooling such an arrangement2 Jan 2024US 11,859,575 B2Innio Jenbacher GmbH & Co OG
- Heat pipes integrated into a 3-D printed part19 Sep 2023US 11,761,369 B1The United States of America as represented by the Secretary of the Air Force
- Engine with gas exchange through piston rod27 Jun 2023US 11,686,199 B2Aquarius Engines (A.M.) Ltd.
- Internal combustion engine15 May 2025US 2025/0154921 A1
- Arrangement for an internal combustion engine and method for cooling such an arrangement23 Mar 2023US 2023/0089357 A1Innio Jenbacher GmbH & Co OG
- Internal combustion engine6 Oct 2022US 2022/0316417 A1Honda Motor Co., Ltd.
- Engine with gas exchange through piston rod8 Sep 2022US 2022/0282620 A1Aquarius Engines (A.M.) Ltd.
- Device for rolling motion by energy from fuel-oil combustion9 Dec 2021US 2021/0381424 A1
Most cited
By later US patents
- Portable energy generation systems41US 8,567,354 B2Clear Energy Systems, Inc. · 2013
- Cylinder head assembly37US 5,421,292 ARyobi Outdoor Products · 1995
- Air cooled internal combustion engine33US 4,438,733 AYanmar Diesel Engine Co., Ltd. · 1984
- Method for manufacturing a cylinder unit for a cylinder piston combustion engine21US 4,630,345 ASachs-Systemtechnik GmbH · 1986
- Method of operating a two-stroke-cycle engine with variable valve timing in a four-stroke-cycle mode20US 5,131,354 ANorth American Philips Corporation · 1992