F23N 2239/00
Fuels
F23N2239/00 (Fuels) appears on 277 US grants and 194 published applications in this corpus.
Search patents in F23N- Granted patents
- 277
- Published applications
- 194
- Assignees
- 205
- Inventors
- 709
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 9 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 12 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 0 |
| 2003 | 3 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 4 |
| 2007 | 2 | 6 |
| 2008 | 4 | 4 |
| 2009 | 2 | 4 |
| 2010 | 1 | 6 |
| 2011 | 5 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 10 |
| 2016 | 0 | 4 |
| 2017 | 3 | 2 |
| 2018 | 3 | 9 |
| 2019 | 11 | 14 |
| 2020 | 8 | 22 |
| 2021 | 8 | 24 |
| 2022 | 22 | 20 |
| 2023 | 12 | 18 |
| 2024 | 17 | 14 |
| 2025 | 18 | 8 |
| 2026 | 8 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for automated furnace inducer sensor output verification22 Sep 2026US 12,742,548 B2Rheem Manufacturing Company
- Method for regulating a pellet-fired burner and corresponding installation25 Aug 2026US 12,716,585 B2N2Air
- 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.
- Atomization burner with flexible fire rate14 Apr 2026US 12,601,481 B2Babington Technology, Inc.
- 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.
- Biomass heater system and method20 Aug 2026US 2026/0243431 A1The Research Foundation for The State University of New York
- Manual air control device for gas burner6 Aug 2026US 2026/0227065 A1SNT Co., Ltd.
- Enhanced sensors for heating operations16 Jul 2026US 2026/0202332 A1
Most cited
By later US patents
- Furnace monitoring system97US 4,296,727 AMicro-Burner Systems Corporation · 1981
- Flame ionization control apparatus and method78US 5,971,745 AGas Research Institute · 1999
- Combustion optimization with inferential sensor78US 6,622,645 B2Honeywell International Inc. · 2003
- Blocked flue detection methods and systems75US 7,255,285 B2Honeywell International Inc. · 2007
- Thermally amplified and stimulated emission radiator fiber matrix burner66US 5,356,487 AThe Quantum Group, Inc. · 1994