F23Q 9/00
Pilot flame igniters
F23Q9/00 (Pilot flame igniters) appears on 233 US grants and 150 published applications in this corpus.
Search patents in F23Q- Granted patents
- 233
- Published applications
- 150
- Assignees
- 145
- Inventors
- 377
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 3 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 11 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 4 |
| 2003 | 2 | 2 |
| 2004 | 5 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 4 |
| 2007 | 2 | 5 |
| 2008 | 0 | 4 |
| 2009 | 1 | 3 |
| 2010 | 2 | 8 |
| 2011 | 4 | 7 |
| 2012 | 6 | 10 |
| 2013 | 3 | 9 |
| 2014 | 5 | 7 |
| 2015 | 4 | 15 |
| 2016 | 7 | 9 |
| 2017 | 13 | 8 |
| 2018 | 9 | 8 |
| 2019 | 7 | 8 |
| 2020 | 7 | 9 |
| 2021 | 3 | 5 |
| 2022 | 9 | 11 |
| 2023 | 10 | 4 |
| 2024 | 4 | 4 |
| 2025 | 3 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Automatically igniting gas flares18 Nov 2025US 12,474,049 B2Saudi Arabian Oil Company
- Fuel systems for torch ignition devices27 May 2025US 12,313,005 B2Collins Engine Nozzles, Inc.
- Pilot assemblies and methods for enclosed ground flares and elevated flare stacks28 Jan 2025US 12,209,748 B2Surefire Pilotless Burner Systems LLC
- High-capacity igniter3 Dec 2024US 12,158,268 B2Forney Corporation
- Internal combustion engine with ceramic pilot chamber component(s)15 Oct 2024US 12,117,173 B1Pratt & Whitney Canada Corp.
- Flame-based detectors with ignition promoter port10 Sep 2026US 2026/0266777 A1Agilent Technologies, Inc.
- Pilot burner assembly30 Apr 2026US 2026/0117976 A1
- Water heater with intermittent pilot and damper control11 Dec 2025US 2025/0377098 A1Bradford White Corporation
- Burner system including a distal flame holder and a non-reactive fluid source20 Mar 2025US 2025/0093024 A1Clearsign Technologies Corporation
- Retractable and extendable portable ignitors, ignition systems, and associated methods13 Feb 2025US 2025/0052424 A1Marathon Petroleum Company LP
Most cited
By later US patents
- Burner ignition system132US 4,717,333 AAdvanced Mechanical Technology, Inc. · 1988
- Relighter control system102US 6,743,010 B2Gas Electronics, Inc. · 2004
- Dual fuel heater68US 7,607,426 B22009
- Burner block valve assembly61US 4,021,190 ARockwell International Corporation · 1977
- Control valves for heaters and fireplace devices57US 7,654,820 B22010