F23N 2229/08
Detecting flame flicker
Official title: detecting flame flicker
F23N2229/08 (Detecting flame flicker) appears on 45 US grants and 24 published applications in this corpus.
Search patents in F23N- Granted patents
- 45
- Published applications
- 24
- Assignees
- 34
- Inventors
- 82
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 3 |
| 2006 | 1 | 4 |
| 2007 | 2 | 2 |
| 2008 | 4 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 3 |
| 2012 | 3 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Flame analytics system11 Nov 2025US 12,467,692 B2Honeywell International Inc.
- Flame analytics system13 Feb 2024US 11,898,800 B2Honeywell International Inc.
- In situ fuel-to-air ratio (FAR) sensor for combustion using a Fourier based flame ionization probe12 Jan 2021US 10,890,123 B2Intellihot, Inc.
- Control for monitoring flame integrity in a heating appliance14 Jun 2016US 9,366,433 B2Emerson Electric Co.
- Systems, methods, and computer program products providing flame detection30 Jun 2015US 9,068,747 B2Safe-Fire, Inc.
- Flame analytics system18 Apr 2024US 2024/0125554 A1Honeywell International Inc.
- Test lamp for multi-spectrum mid-ir flame detectors5 Oct 2023US 2023/0316887 A1Carrier Corporation
- Burner flame stabilization method and system18 Nov 2021US 2021/0356126 A1Zeeco, Inc.
- In situ fuel-to-air ratio (far) sensor for combustion using a fourier based flame ionization probe1 Oct 2020US 2020/0309046 A1Intellihot, Inc.
- Flame analytics system7 May 2020US 2020/0141653 A1Honeywell International Inc.
Most cited
By later US patents
- Optical sensing of combustion dynamics67US 5,544,478 AGeneral Electric Company · 1996
- Burner flame sensing system and method66US 5,077,550 AAllen-Bradley Company, Inc. · 1991
- Apparatus for observing combustion conditions in a gas turbine engine64US 7,484,369 B2Rosemount Aerospace Inc. · 2009
- Dual detector flame sensor59US 4,370,557 AHoneywell Inc. · 1983
- Early fire detection method and apparatus48US 6,184,792 B22001