F02P 21/00
Direct use of flames or burners for ignition
F02P21/00 (Direct use of flames or burners for ignition) appears on 14 US grants and 11 published applications in this corpus.
Search patents in F02P- Granted patents
- 14
- Published applications
- 11
- Assignees
- 12
- Inventors
- 34
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 2 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for combusting unconventional fuel chemistries in a diesel engine architecture7 Jul 2026US 12,674,409 B2Climate Energy Investments, LLC
- Fuel systems for torch ignition devices27 May 2025US 12,313,005 B2Collins Engine Nozzles, Inc.
- Systems and methods for combusting unconventional fuel chemistries in a diesel engine architecture9 Apr 2024US 11,952,936 B1ClearFlame Engines, Inc.
- Air-assisted jet flame ignition device and ignition method thereof30 May 2023US 11,661,885 B2Tianjin University
- Fuel systems for torch ignition devices25 Apr 2023US 11,635,027 B2Collins Engine Nozzles, Inc.
- Systems and methods for combusting unconventional fuel chemistries in a diesel engine architecture23 Jan 2025US 2025/0027440 A1ClearFlame Engines, Inc.
- Fuel systems for torch ignition devices7 Dec 2023US 2023/0392552 A1Collins Engine Nozzles, Inc.
- Cold Start for High-Octane Fuels in a Diesel Engine Architecture27 Apr 2023US 2023/0129315 A1ClearFlame Engines, Inc.
- Air-assisted jet flame ignition device and ignition method thereof9 Feb 2023US 2023/0040984 A1Tianjin University
- Fuel systems for torch ignition devices19 May 2022US 2022/0154932 A1Delavan Inc.
Most cited
By later US patents
- Fuel nozzle and igniter assembly43US 4,938,019 AFuel Systems Textron Inc. · 1990
- Thermal ignition combustion system37US 4,738,227 AAdiabatics, Inc. · 1988
- External compression ignition system for internal combustion engines19US 4,075,996 A1978
- Controlled spark ignited flame kernel flow in fuel-fed prechambers11US 9,476,347 B2Woodward, Inc. · 2016
- Internal combustion engine firing system6US 5,647,309 A1997