F23N 5/00
Systems for controlling combustion
Official title: Systems for controlling combustion (regulating fuel supply F23N1/00, regulating air supply or draught F23N3/00)
F23N5/00 (Systems for controlling combustion) appears on 3,364 US grants and 2,591 published applications in this corpus.
Search patents in F23N- Granted patents
- 3,364
- Published applications
- 2,591
- Assignees
- 1,349
- Inventors
- 6,059
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 70 | 0 |
| 1977 | 58 | 0 |
| 1978 | 66 | 0 |
| 1979 | 48 | 0 |
| 1980 | 42 | 0 |
| 1981 | 54 | 0 |
| 1982 | 49 | 0 |
| 1983 | 62 | 0 |
| 1984 | 63 | 0 |
| 1985 | 58 | 0 |
| 1986 | 51 | 0 |
| 1987 | 54 | 0 |
| 1988 | 46 | 0 |
| 1989 | 66 | 0 |
| 1990 | 54 | 0 |
| 1991 | 63 | 0 |
| 1992 | 53 | 0 |
| 1993 | 66 | 0 |
| 1994 | 62 | 0 |
| 1995 | 48 | 0 |
| 1996 | 57 | 0 |
| 1997 | 46 | 0 |
| 1998 | 57 | 0 |
| 1999 | 72 | 0 |
| 2000 | 56 | 0 |
| 2001 | 51 | 20 |
| 2002 | 58 | 58 |
| 2003 | 67 | 53 |
| 2004 | 55 | 87 |
| 2005 | 40 | 90 |
| 2006 | 51 | 92 |
| 2007 | 57 | 109 |
| 2008 | 44 | 81 |
| 2009 | 50 | 92 |
| 2010 | 56 | 133 |
| 2011 | 53 | 122 |
| 2012 | 64 | 117 |
| 2013 | 83 | 123 |
| 2014 | 94 | 142 |
| 2015 | 79 | 123 |
| 2016 | 111 | 149 |
| 2017 | 118 | 106 |
| 2018 | 101 | 120 |
| 2019 | 126 | 125 |
| 2020 | 102 | 125 |
| 2021 | 95 | 107 |
| 2022 | 93 | 106 |
| 2023 | 85 | 109 |
| 2024 | 80 | 96 |
| 2025 | 81 | 59 |
| 2026 | 49 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F23N 5/02Systems for controlling combustion: using devices responsive to thermal changes or to1,565
- F23N 5/24Preventing development of abnormal or undesired conditions, i.e. safety arrangements971
- F23N 5/003Systems for controlling combustion: using detectors sensitive to combustion gas properties654
- F23N 5/20Systems for controlling combustion: with a time program acting through electrical means540
- F23N 5/18Systems for controlling combustion: using detectors sensitive to rate of flow of435
- F23N 5/26Details155
- F23N 5/16Systems for controlling combustion: using noise-sensitive detectors123
- F23N 5/22Systems for controlling combustion: with a time program acting through mechanical means26
Recent patents
- Method and kiln for the firing of substantially flat base ceramic articles8 Sep 2026US 12,729,855 B2Sacmi Forni & Filter S.P.A.
- Control unit for detecting a flame in operation using flame monitors suitable for burners and flame monitoring system1 Sep 2026US 12,723,756 B2BFI Automation Mindermann GmbH
- Method of starting a burner device and heating device having a burner device1 Sep 2026US 12,723,757 B2Truma Geraetetechnik GmbH & Co. KG
- Systems and methods for operation of a flexible fuel combustor25 Aug 2026US 12,716,589 B28 Rivers Capital, LLC
- Method and device for heating a furnace18 Aug 2026US 12,710,173 B2Linde Aktiengesellschaft
- Furnace combustion gas sensing and control systems and methods1 Oct 2026US 2026/0298468 A1
- System and method for flashback arrest and flame temperature reduction for hydrogen-based fuels1 Oct 2026US 2026/0298469 A1Georgia Tech Research Corporation
- Hydrogen gas burner10 Sep 2026US 2026/0266459 A1Amf Den Boer B.V.
- Flue gas circulation system for improving combustion characteristics and thermal characteristics of pulverized coal fired boiler3 Sep 2026US 2026/0258941 A1Xi'an Thermal Power Research Institute Co., Ltd.
- Device for producing a hydrogen - gaseous hydrocarbon mixture3 Sep 2026US 2026/0258948 A1Suntec Industries France
Most cited
By later US patents
- Programmer1,483US 4,213,562 A1980
- Graphical user interface system for a thermal comfort controller353US 6,595,430 B1Honeywell International Inc. · 2003
- Thermostat system communicating with a remote correspondent for receiving and displaying diverse information325US 6,619,555 B22003
- Electrically controlled programmable digital thermostat and method for regulating the operation of multistage heating and cooling systems272US 4,442,972 ATexas Instruments Incorporated · 1984
- Thermostat system with location data271US 6,789,739 B22004