F23D 2209/20
Flame lift-off / stability
F23D2209/20 (Flame lift-off / stability) appears on 130 US grants and 100 published applications in this corpus.
Search patents in F23D- Granted patents
- 130
- Published applications
- 100
- Assignees
- 93
- Inventors
- 330
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 9 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 3 |
| 2002 | 7 | 7 |
| 2003 | 5 | 4 |
| 2004 | 7 | 3 |
| 2005 | 3 | 7 |
| 2006 | 4 | 8 |
| 2007 | 3 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 2 |
| 2010 | 4 | 2 |
| 2011 | 3 | 0 |
| 2012 | 2 | 3 |
| 2013 | 3 | 4 |
| 2014 | 1 | 4 |
| 2015 | 2 | 2 |
| 2016 | 2 | 9 |
| 2017 | 2 | 5 |
| 2018 | 3 | 4 |
| 2019 | 4 | 2 |
| 2020 | 4 | 7 |
| 2021 | 2 | 4 |
| 2022 | 6 | 7 |
| 2023 | 5 | 1 |
| 2024 | 4 | 4 |
| 2025 | 2 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Active and passive combustion stabilization for burners for highly and rapidly varying fuel gas compositions27 Aug 2024US 12,072,097 B2Honeywell International Inc.
- Burner, furnace and method of generating a flame18 Dec 2025US 2025/0383079 A1Messer Industries USA, Inc.
- Low nox emission burner for firing liquid fuels and method of operation18 Dec 2025US 2025/0383083 A1Honeywell International Inc.
- Low nox emission burner for firing liquid fuels or fuel gas and method of operation18 Dec 2025US 2025/0383088 A1Honeywell International Inc.
- Fire grate, burner, and gas water heater19 Dec 2024US 2024/0418364 A1Wuhu Midea Smart Kitchen Appliance Manufacturing Co., Ltd.
- Method for burning a liquid or gaseous fuel in a boiler, boiler for carrying out the method and thermal bath having a boiler29 Aug 2024US 2024/0288160 A1Swiss E-Futurtec AG
Most cited
By later US patents
- Gas turbine ultra low NOx combustor149US 5,361,586 AWestinghouse Electric Corp. · 1994
- Gas turbine ultra low NOx combustor123US 5,713,206 AWestinghouse Electric Corp. · 1998
- Method of burning a premixed gas in a combustor cap78US 5,325,660 AHitachi, Ltd. · 1994
- Gas Burner77US 6,461,147 B1Leiv Eiriksson Nyfotek AS · 2002
- Electric flame control using corona discharge enhancement75US 7,243,496 B2Siemens Power Generation, Inc. · 2007