F02M 23/09
Using valves directly opened by low pressure
Official title: using valves directly opened by low pressure
F02M23/09 (Using valves directly opened by low pressure) appears on 52 US grants and 2 published applications in this corpus.
Search patents in F02M- Granted patents
- 52
- Published applications
- 2
- Assignees
- 19
- Inventors
- 67
- Latest grant
- 3 Feb 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Accelerator pump cap for a motorcycle carburetor3 Feb 2009US 7,484,717 B2
- Automatic valve for the inlet manifold of an internal combustion engine15 Aug 2000US 6,102,017 A
- Air inlet assistor for a vehicle engine4 May 1999US 5,899,184 A
- Air inlet auxiliary device for vehicles8 Dec 1998US 5,845,626 A
- Fuel system23 Jun 1998US 5,769,062 A
Most cited
By later US patents
- Method of reducing emission of pollutants from multi-cylinder engine61US 4,036,014 ANissan Motor Co., Ltd. · 1977
- Internal combustion engines16US 4,166,435 A1979
- Air induction valve12US 3,990,420 A1976
- Deceleration control apparatus for vehicle engine11US 4,178,890 AHonda Giken Kogyo Kabushiki Kaisha · 1979
- Emission control device for carbureted engines11US 5,046,475 AThompson Devices, Inc. · 1991