F23N 2229/02
Pilot flame sensors
F23N2229/02 (Pilot flame sensors) appears on 58 US grants and 49 published applications in this corpus.
Search patents in F23N- Granted patents
- 58
- Published applications
- 49
- Assignees
- 38
- Inventors
- 112
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 4 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 2 | 2 |
| 2013 | 2 | 4 |
| 2014 | 4 | 2 |
| 2015 | 3 | 3 |
| 2016 | 2 | 1 |
| 2017 | 3 | 1 |
| 2018 | 2 | 3 |
| 2019 | 1 | 2 |
| 2020 | 2 | 9 |
| 2021 | 4 | 5 |
| 2022 | 3 | 4 |
| 2023 | 4 | 1 |
| 2024 | 1 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Flame detection device and method26 Aug 2025US 12,398,883 B2Federal-Mogul Ignition Company
- Interruption of methane flow to process heating systems responsive to flame loss17 Jun 2025US 12,331,930 B1
- Smart fuel burning system and method of operating same30 Jan 2024US 11,885,494 B2Reecon M & E Co. Ltd.
- System and method for operational control of a water heater apparatus with a combustible gas burner8 Aug 2023US 11,719,437 B2Sit S.P.A.
- Water-heating apparatus comprising combustible gas burner, in particular a storage water heater20 Jun 2023US 11,680,707 B2Sit S.P.A.
- Flame detection device and method15 Jun 2023US 2023/0184435 A1Federal-Mogul Ignition Company
- Smart Fuel Burning System and Method of Operating Same29 Sep 2022US 2022/0307690 A1Reecon M & E Co. Ltd.
- Pilot stabilized burner30 Jun 2022US 2022/0205633 A1Clearsign Combustion Corporation
- Flame sensor assemblies and methods of replacing flame sensor assemblies17 Feb 2022US 2022/0049849 A1Emerson Electric Co.
- Water-heating apparatus comprising combustible gas burner, in particular a storage water heater3 Feb 2022US 2022/0034508 A1Sit S.P.A.
Most cited
By later US patents
- Heater with flame powered logic supply circuit66US 4,984,981 AA. O. Smith Corporation · 1991
- Self-checking safety switch control circuit26US 4,403,942 ACarrier Corporation · 1983
- Condition control system for efficient transfer of energy to and from a working fluid25US 4,373,663 AHoneywell Inc. · 1983
- Flame ignition and monitoring system and method18US 4,871,307 A1989
- Gas burner control system14US 4,435,150 AEmerson Electric Co. · 1984