F02F 2001/244
Arrangement of valve stems in cylinder heads
Official title: {Arrangement of valve stems in cylinder heads}
F02F2001/244 (Arrangement of valve stems in cylinder heads) appears on 1,186 US grants and 254 published applications in this corpus.
Search patents in F02F- Granted patents
- 1,186
- Published applications
- 254
- Assignees
- 234
- Inventors
- 1,807
- Latest grant
- 25 Nov 2025
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| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 19 | 0 |
| 1979 | 8 | 0 |
| 1980 | 14 | 0 |
| 1981 | 11 | 0 |
| 1982 | 17 | 0 |
| 1983 | 7 | 0 |
| 1984 | 28 | 0 |
| 1985 | 42 | 0 |
| 1986 | 33 | 0 |
| 1987 | 58 | 0 |
| 1988 | 50 | 0 |
| 1989 | 50 | 0 |
| 1990 | 57 | 0 |
| 1991 | 45 | 0 |
| 1992 | 46 | 0 |
| 1993 | 44 | 0 |
| 1994 | 40 | 0 |
| 1995 | 30 | 0 |
| 1996 | 36 | 0 |
| 1997 | 42 | 0 |
| 1998 | 51 | 0 |
| 1999 | 55 | 0 |
| 2000 | 44 | 0 |
| 2001 | 65 | 28 |
| 2002 | 55 | 62 |
| 2003 | 66 | 44 |
| 2004 | 48 | 16 |
| 2005 | 17 | 13 |
| 2006 | 12 | 6 |
| 2007 | 6 | 4 |
| 2008 | 3 | 2 |
| 2009 | 3 | 1 |
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| 2022 | 6 | 1 |
| 2023 | 6 | 5 |
| 2024 | 5 | 4 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Internal combustion engine25 Nov 2025US 12,480,436 B2JCB Research
- Cylinder head for a lean-burn gasoline engine18 Feb 2025US 12,228,092 B2Jaguar Land Rover Limited
- Gaseous fuel engine having non-axisymmetric fuel admission valve and method3 Sep 2024US 12,078,129 B2Caterpillar Inc.
- Engine and vehicle having the same9 Apr 2024US 11,952,957 B2BYD Company Limited
- Internal combustion engine20 Feb 2024US 11,905,911 B2Toyota Jidosha Kabushiki Kaisha
- Cylinder head offset chamfer design10 Apr 2025US 2025/0116241 A1Cummins Inc.
- Engine valve configuration28 Nov 2024US 2024/0392703 A1
- Gaseous fuel engine having non-axisymmetric fuel admission valve and method20 Jun 2024US 2024/0200513 A1Caterpillar Inc.
- A cylinder head for a lean-burn gasoline engine30 May 2024US 2024/0175406 A1Jaguar Land Rover Limited
- Internal combustion engine4 Jan 2024US 2024/0003313 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Internal combustion engine102US 4,805,571 AHumphrey Cycle Engine Partners, L.P. · 1989
- In-cylinder direct-injection spark-ignition engine98US 6,138,639 ANissan Motor Co., Ltd. · 2000
- Device for driving electrical current generator for use in motorcycle96US 4,631,469 AHonda Giken Kogyo Kabushiki Kaisha · 1986
- Adjustable (D)-port insert header for internal combustion engines91US 4,302,935 A1981
- Structure of an exhaust port in an internal combustion engine85US 5,816,210 ANissan Diesel Motor Co., Ltd. · 1998