F02F 1/305
The cylinder heads being of side valve type
Official title: {the cylinder heads being of side valve type}
F02F1/305 (The cylinder heads being of side valve type) appears on 8 US grants and 4 published applications in this corpus.
Search patents in F02F- Granted patents
- 8
- Published applications
- 4
- Assignees
- 8
- Inventors
- 25
- Latest grant
- 10 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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- Four-stroke internal combustion engine2 Nov 2004US 6,810,849 B1Briggs & Stratton Corporation
- Handheld type four-cycle engine23 Jul 2002US 6,422,194 B2Honda Giken Kogyo Kabushiki Kaisha
- Crankcase breather and lubrication oil system for an internal combustion engine22 May 1990US 4,926,814 ATecumseh Products Company
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- Portable 4-cycle engine and portable machine equipped with the 4-cycle engine26 Jul 2007US 2007/0169726 A1Fuji Robin Kabushiki Kaisya
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Most cited
By later US patents
- 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
- Internal combustion engine22US 4,513,702 AHonda Giken Kogyo Kabushiki Kaisha · 1985
- Handheld type four-cycle engine11US 6,422,194 B2Honda Giken Kogyo Kabushiki Kaisha · 2002
- Side valve internal combustion engine8US 3,967,595 AHonda Giken Kogyo Kabushiki Kaisha · 1976