F02B 5/00
Engines characterised by positive ignition
Official title: Engines characterised by positive ignition (engines characterised by fuel-air mixture compression with positive ignition F02B1/02; engines characterised by air compression and subsequent fuel addition with positive ignition F02B3/02; with non-timed positive ignition F02B9/06; characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B11/00)
F02B5/00 (Engines characterised by positive ignition) appears on 78 US grants and 80 published applications in this corpus.
Search patents in F02B- Granted patents
- 78
- Published applications
- 80
- Assignees
- 43
- Inventors
- 176
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 6 |
| 2015 | 2 | 7 |
| 2016 | 10 | 18 |
| 2017 | 8 | 9 |
| 2018 | 13 | 4 |
| 2019 | 10 | 4 |
| 2020 | 4 | 4 |
| 2021 | 5 | 7 |
| 2022 | 6 | 3 |
| 2023 | 3 | 2 |
| 2024 | 2 | 2 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Off-road vehicle12 Aug 2025US 12,384,464 B2Polaris Industries Inc.
- Hydrogen-fueled four-stroke internal combustion engine29 Jul 2025US 12,372,025 B2Dma Tech S.à R.L.
- Internal combustion engine with spark plug and prechamber spark plug10 Sep 2024US 12,085,009 B2Robert Bosch GmbH
- Hydrogen-powered opposed-piston engine13 Feb 2024US 11,898,448 B2Achates Power, Inc.
- Piston discharge structure for plasma cloud excitation engine3 Oct 2023US 11,773,816 B2Beijing Bdh Laser Science & Technology Inc. Ltd.
- Off-road vehicle2 Jul 2026US 2026/0184375 A1Polaris Industries Inc.
- Ignition system23 Apr 2026US 2026/0110285 A1Volvo Truck Corporation
- Tubular structure adapted to at least partly enclose a pencil coil for internal combustion engines14 Aug 2025US 2025/0257683 A1Sem AB
- Hydrogen-fueled four-stroke internal combustion engine10 Apr 2025US 2025/0116222 A1Dma Tech S.à R.L.
- Internal Combustion Engine with Spark Plug and Prechamber Spark Plug11 Jul 2024US 2024/0229705 A9Robert Bosch GmbH
Most cited
By later US patents
- Flex fuel field generator28US 9,175,601 B2INI Power Systems, Inc. · 2015
- Otto-cycle internal combustion engine26US 4,287,862 ANippon Soken, Inc. · 1981
- Dual head piston engine21US 7,412,949 B12008
- Method of operating an internal combustion engine19US 5,740,776 ADaimler-Benz Aktiengesellschaft · 1998
- Filter substrate comprising three-way catalyst19US 9,352,279 B2Johnson Matthey Public Limited Company · 2016