F02B 2275/18
Dohc [double overhead camshaft]
Official title: DOHC [Double overhead camshaft]
F02B2275/18 (Dohc [double overhead camshaft]) appears on 1,268 US grants and 197 published applications in this corpus.
Search patents in F02B- Granted patents
- 1,268
- Published applications
- 197
- Assignees
- 189
- Inventors
- 1,605
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 19 | 0 |
| 1985 | 26 | 0 |
| 1986 | 29 | 0 |
| 1987 | 42 | 0 |
| 1988 | 34 | 0 |
| 1989 | 36 | 0 |
| 1990 | 56 | 0 |
| 1991 | 83 | 0 |
| 1992 | 67 | 0 |
| 1993 | 69 | 0 |
| 1994 | 56 | 0 |
| 1995 | 60 | 0 |
| 1996 | 69 | 0 |
| 1997 | 75 | 0 |
| 1998 | 79 | 0 |
| 1999 | 80 | 0 |
| 2000 | 58 | 0 |
| 2001 | 60 | 27 |
| 2002 | 64 | 64 |
| 2003 | 68 | 36 |
| 2004 | 34 | 30 |
| 2005 | 29 | 11 |
| 2006 | 12 | 6 |
| 2007 | 10 | 4 |
| 2008 | 2 | 2 |
| 2009 | 3 | 5 |
| 2010 | 5 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 3 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 4 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Cylinder head5 May 2020US 10,641,202 B2Toyota Jidosha Kabushiki Kaisha
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Most cited
By later US patents
- System for controlling a valve mechanism for an internal combustion engine104US 5,398,502 AFuji Jukogyo Kabushiki Kaisha · 1995
- Internal combustion engine102US 4,805,571 AHumphrey Cycle Engine Partners, L.P. · 1989
- System for regulating valve timing of internal combustion engine93US 5,924,395 AToyota Jidosha Kabushiki Kaisha · 1999
- Dual-acting apparatus for variable valve timing and the like87US 5,417,186 AClemson University · 1995
- Intake system for internal combustion engine86US 4,763,612 AYamaha Hatsudoki Kabushiki Kaisha · 1988