F23N 2229/14
Flame sensors: using two or more different types of flame sensor
Official title: using two or more different types of flame sensor
F23N2229/14 (Flame sensors: using two or more different types of flame sensor) appears on 40 US grants and 30 published applications in this corpus.
Search patents in F23N- Granted patents
- 40
- Published applications
- 30
- Assignees
- 37
- Inventors
- 103
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 5 |
| 2013 | 1 | 1 |
| 2014 | 2 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 3 |
| 2023 | 2 | 3 |
| 2024 | 1 | 3 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Flame monitoring device for a gas burner appliance and gas burner appliance16 Jun 2026US 12,655,974 B2Pittway Sarl
- Flameout protection system and heater24 Feb 2026US 12,560,332 B2Shinerich Industrial Ltd.
- Systems and methods for controlling a heat transfer system25 Nov 2025US 12,480,654 B2Rheem Manufacturing Company
- Emission monitoring and control of flare systems24 Jun 2025US 12,338,995 B2Baker Hughes Holdings LLC
- Intelligent gas cooktop burner6 Feb 2024US 11,892,173 B2Robertshaw Controls Company
- Method and device for estimating a combustion efficiency value during flaring21 Aug 2025US 2025/0264217 A1
- Control of a Combustion Device26 Sep 2024US 2024/0318819 A1Siemens Aktiengesellschaft
- Sensor device and method for flame presence detection12 Sep 2024US 2024/0302040 A1STMicroelectronics S. r. I.
- Flameout protection system and heater4 Jul 2024US 2024/0219034 A1Shinerich Industrial Ltd.
- Device and method for controlling a fuel-oxidizer mixture in a premix gas burner14 Sep 2023US 2023/0288063 A1
Most cited
By later US patents
- Flame detector for use with a burner65US 4,709,155 ABabcock-Hitachi Kabushiki Kaisha · 1987
- Fire detection system with IR and UV ratio detector46US 4,455,487 AArmtec Industries, Inc. · 1984
- Optical flame and explosion detection system and method44US 4,220,857 ASystron Donner Corporation · 1980
- Discriminating fire sensor33US 4,101,767 ASensors, Inc. · 1978
- Plural-wavelength flame detector that discriminates between direct and reflected radiation26US 5,625,342 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1997