F02F 1/242
Arrangement of spark plugs or injectors
Official title: {Arrangement of spark plugs or injectors}
F02F1/242 (Arrangement of spark plugs or injectors) appears on 488 US grants and 354 published applications in this corpus.
Search patents in F02F- Granted patents
- 488
- Published applications
- 354
- Assignees
- 176
- Inventors
- 1,101
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 8 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 12 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 23 | 0 |
| 1999 | 11 | 0 |
| 2000 | 13 | 0 |
| 2001 | 16 | 10 |
| 2002 | 11 | 19 |
| 2003 | 19 | 9 |
| 2004 | 7 | 11 |
| 2005 | 13 | 3 |
| 2006 | 6 | 1 |
| 2007 | 2 | 6 |
| 2008 | 0 | 4 |
| 2009 | 7 | 10 |
| 2010 | 4 | 7 |
| 2011 | 2 | 5 |
| 2012 | 4 | 4 |
| 2013 | 6 | 14 |
| 2014 | 7 | 13 |
| 2015 | 11 | 24 |
| 2016 | 10 | 31 |
| 2017 | 21 | 24 |
| 2018 | 27 | 26 |
| 2019 | 23 | 27 |
| 2020 | 20 | 27 |
| 2021 | 29 | 18 |
| 2022 | 26 | 15 |
| 2023 | 14 | 17 |
| 2024 | 14 | 15 |
| 2025 | 12 | 3 |
| 2026 | 3 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Spark ignition engine and method for operating spark ignition engine17 Sep 2026US 2026/0275932 A1Mazda Motor Corporation
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- Passive prechamber fueling device and method23 Jul 2026US 2026/0210285 A1Aramco Services Company
- Wall-guided spark assistance for cold operations in gasoline compression ignition engines16 Jul 2026US 2026/0201828 A1Aramco Services Company
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Most cited
By later US patents
- Plasma jet ignition engine and method122US 4,203,393 AFord Motor Company · 1980
- Winged reentrant electromagnetic combustion chamber69US 4,561,406 ACombustion Electromagnetics, Inc. · 1985
- Direct fuel injection stratified charge engine63US 5,605,125 A1997
- Direct fuel injection stratified charge engine53US 5,746,171 A1998
- Auto-ignition gasoline engine combustion chamber and method49US 6,971,365 B1General Motors Corporation · 2005