F23N 2231/06
Fail safe: for flame failures
Official title: for flame failures
F23N2231/06 (Fail safe: for flame failures) appears on 108 US grants and 108 published applications in this corpus.
Search patents in F23N- Granted patents
- 108
- Published applications
- 108
- Assignees
- 83
- Inventors
- 300
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 5 |
| 2007 | 1 | 7 |
| 2008 | 3 | 6 |
| 2009 | 2 | 5 |
| 2010 | 3 | 6 |
| 2011 | 2 | 2 |
| 2012 | 4 | 3 |
| 2013 | 5 | 4 |
| 2014 | 2 | 6 |
| 2015 | 3 | 8 |
| 2016 | 3 | 3 |
| 2017 | 7 | 3 |
| 2018 | 5 | 7 |
| 2019 | 3 | 6 |
| 2020 | 3 | 8 |
| 2021 | 8 | 6 |
| 2022 | 5 | 8 |
| 2023 | 7 | 2 |
| 2024 | 2 | 4 |
| 2025 | 2 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Real-time flare optimization using an edge device12 May 2026US 12,624,834 B2Schlumberger Technology Corporation
- Method for detecting burner failure6 Jan 2026US 12,517,015 B2ROLLS-ROYCE plc
- Interruption of methane flow to process heating systems responsive to flame loss17 Jun 2025US 12,331,930 B1
- Thermoelectric safety assembly15 Apr 2025US 12,276,422 B2Orkli, S. Coop.
- Gas turbine fire detection system including cooling system upstream of aspirating smoke detector, and related method17 Sep 2024US 12,092,035 B2GE Infrastructure Technology LLC
- Systems and Methods for Pre-Ignition Moisture Removal in Heating Alliances12 Feb 2026US 2026/0043543 A1Rheem Manufacturing Company
- Gas ignition system for a gas cooking appliance11 Dec 2025US 2025/0377116 A1Haier US Appliance Solutions, Inc.
- Gas grills including bus bars16 Oct 2025US 2025/0318683 A1Weber-Stephen Products LLC
- Method for detecting burner failure5 Jun 2025US 2025/0180435 A1ROLLS-ROYCE plc
- Gas turbine fire detection system including cooling system upstream of aspirating smoke detector, and related method11 Jul 2024US 2024/0229718 A9General Electric Company
Most cited
By later US patents
- Integrated furnace control having ignition and pressure switch diagnostics129US 4,842,510 AHamilton Standard Controls, Inc. · 1989
- Integrated furnace control having ignition switch diagnostics119US 4,955,806 AHamilton Standard Controls, Inc. · 1990
- Fuel ignition control system42US 4,242,079 AJohnson Controls GmbH · 1980
- Direct ignition system for gas appliance with DC power source40US 4,303,385 AJohnson Controls GmbH · 1981
- Gas furnace control system29US 4,789,330 ACarrier Corporation · 1988