F23N 2239/04
Gaseous fuels
F23N2239/04 (Gaseous fuels) appears on 125 US grants and 125 published applications in this corpus.
Search patents in F23N- Granted patents
- 125
- Published applications
- 125
- Assignees
- 104
- Inventors
- 345
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 7 |
| 2016 | 0 | 2 |
| 2017 | 2 | 2 |
| 2018 | 3 | 7 |
| 2019 | 9 | 9 |
| 2020 | 6 | 19 |
| 2021 | 6 | 16 |
| 2022 | 18 | 14 |
| 2023 | 9 | 16 |
| 2024 | 11 | 12 |
| 2025 | 11 | 5 |
| 2026 | 5 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for automated furnace inducer sensor output verification22 Sep 2026US 12,742,548 B2Rheem Manufacturing Company
- Gas valve and gas stove16 Jun 2026US 12,655,985 B2BSH Hausgeräte GmbH
- Device and method for controlling a fuel-oxidizer mixture for a premix gas burner14 Apr 2026US 12,601,477 B2Bertelli & Partners S.R.L.
- Systems and processes of eliminating start-up flaring in a gas plant17 Mar 2026US 12,578,740 B2Saudi Arabian Oil Company
- Flameout protection system and heater24 Feb 2026US 12,560,332 B2Shinerich Industrial Ltd.
- Device for delivering a gaseous mixture, corresponding delivery apparatus and corresponding method of use3 Sep 2026US 2026/0258947 A1Sit S.P.A.
- Remaining gas amount management system27 Aug 2026US 2026/0251490 A1Panasonic Intellectual Property Management Co., Ltd.
- Manual air control device for gas burner6 Aug 2026US 2026/0227065 A1SNT Co., Ltd.
- Enhanced sensors for heating operations16 Jul 2026US 2026/0202332 A1
- Turbine engine having an optical sensor12 Mar 2026US 2026/0071754 A1General Electric Company
Most cited
By later US patents
- Furnace monitoring system97US 4,296,727 AMicro-Burner Systems Corporation · 1981
- Thermally amplified and stimulated emission radiator fiber matrix burner66US 5,356,487 AThe Quantum Group, Inc. · 1994
- Furnace control using induced draft blower and exhaust stack flow rate sensing65US 4,251,025 AHoneywell Inc. · 1981
- Pulse combustion control system63US 4,080,149 ARobertshaw Controls Company · 1978
- Furnace control using induced draft blower and exhaust gas differential pressure sensing59US 4,334,855 AHoneywell Inc. · 1982