F02F 1/28
For air cooling
Official title: for air cooling
F02F1/28 (For air cooling) appears on 87 US grants and 48 published applications in this corpus.
Search patents in F02F- Granted patents
- 87
- Published applications
- 48
- Assignees
- 44
- Inventors
- 177
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 5 |
| 2005 | 4 | 3 |
| 2006 | 1 | 1 |
| 2007 | 3 | 4 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 3 |
| 2013 | 0 | 3 |
| 2014 | 3 | 0 |
| 2015 | 2 | 4 |
| 2016 | 2 | 1 |
| 2017 | 3 | 5 |
| 2018 | 5 | 3 |
| 2019 | 2 | 3 |
| 2020 | 2 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air-cooled, four-stroke aviation engine30 Sep 2025US 12,429,010 B2Textron Innovations Inc.
- Air-cooled, four-stroke aviation engine18 Jun 2024US 12,012,910 B2Textron Innovations Inc.
- Cylinder head7 Sep 2021US 11,111,876 B2Toyota Jidosha Kabushiki Kaisha
- Thermally enhanced exhaust port liner27 Apr 2021US 10,989,137 B2Cartridge Limited
- Motor engine having an oxygen sensor9 Jun 2020US 10,677,137 B2Southern Taiwan University of Science and Technology
- Air-cooled, four-stroke aviation engine22 Jan 2026US 2026/0022676 A1Textron Innovations Inc.
- Air-cooled, four-stroke aviation engine10 Oct 2024US 2024/0337227 A1Textron Innovations Inc.
- Air-cooled, four-stroke aviation engine9 Feb 2023US 2023/0040082 A1Avco Corporation
- Cylinder head15 Oct 2020US 2020/0325846 A1Toyota Jidosha Kabushiki Kaisha
- Thermally enhanced exhaust port liner30 Apr 2020US 2020/0132014 A1Cartridge Limited
Most cited
By later US patents
- Belt transmission having air cooling function80US 4,531,928 AHonda Giken Kogyo Kabushiki Kaisha · 1985
- Belt transmission having circulated air cooling function66US 4,493,677 AHonda Motor Co., Ltd. · 1985
- Cylinder head assembly37US 5,421,292 ARyobi Outdoor Products · 1995
- Four-stroke internal combustion engine28US 6,810,849 B1Briggs & Stratton Corporation · 2004
- Crankcase breather and lubrication oil system for an internal combustion engine26US 4,926,814 ATecumseh Products Company · 1990