F23N 5/003
Systems for controlling combustion: using detectors sensitive to combustion gas properties
Official title: {using detectors sensitive to combustion gas properties (F23N5/02, F23N5/18 - F23N5/26 take precedence)}
F23N5/003 (Systems for controlling combustion: using detectors sensitive to combustion gas properties) appears on 654 US grants and 539 published applications in this corpus.
Search patents in F23N- Granted patents
- 654
- Published applications
- 539
- Assignees
- 408
- Inventors
- 1,626
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 11 | 0 |
| 1982 | 13 | 0 |
| 1983 | 14 | 0 |
| 1984 | 15 | 0 |
| 1985 | 16 | 0 |
| 1986 | 13 | 0 |
| 1987 | 12 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 12 | 0 |
| 1993 | 15 | 0 |
| 1994 | 16 | 0 |
| 1995 | 6 | 0 |
| 1996 | 14 | 0 |
| 1997 | 10 | 0 |
| 1998 | 10 | 0 |
| 1999 | 12 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 5 |
| 2002 | 13 | 11 |
| 2003 | 12 | 10 |
| 2004 | 20 | 21 |
| 2005 | 5 | 11 |
| 2006 | 11 | 18 |
| 2007 | 11 | 20 |
| 2008 | 10 | 14 |
| 2009 | 13 | 19 |
| 2010 | 13 | 19 |
| 2011 | 10 | 28 |
| 2012 | 7 | 32 |
| 2013 | 14 | 43 |
| 2014 | 23 | 32 |
| 2015 | 14 | 23 |
| 2016 | 26 | 32 |
| 2017 | 27 | 19 |
| 2018 | 21 | 20 |
| 2019 | 25 | 19 |
| 2020 | 22 | 24 |
| 2021 | 16 | 19 |
| 2022 | 15 | 23 |
| 2023 | 8 | 25 |
| 2024 | 21 | 19 |
| 2025 | 20 | 16 |
| 2026 | 12 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Measuring instrument for determining the gross or net calorific value of a hydrocarbon-containing fuel gas21 Jul 2026US 12,687,496 B2Siemens Aktiengesellschaft
- Fluid heating system with combustion trim learning14 Jul 2026US 12,680,727 B2A. O. Smith Corporation
- Hydronic surface heater with auto-adjusting burner7 Jul 2026US 12,674,578 B2Wacker Neuson America Corporation
- System and method for superheated working fluid injection into a well2 Jun 2026US 12,644,366 B1Empire Petroleum Corporation
- Method for operating a gas burner and gas burner for performing the method28 Apr 2026US 12,613,033 B2Viessmann Climate Solutions SE
- Furnace combustion gas sensing and control systems and methods1 Oct 2026US 2026/0298468 A1
- 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
- Building Emission Processing and/or Sequestration Systems and Methods27 Aug 2026US 2026/0251297 A1Carbonquest, Inc.
- Biomass heater system and method20 Aug 2026US 2026/0243431 A1The Research Foundation for The State University of New York
Most cited
By later US patents
- Non-recovery coke oven gas combustion system135US 5,968,320 AStelco Inc. · 1999
- Variable heat generating method and apparatus129US 4,622,007 AAmerican Combustion, Inc. · 1986
- Method and system for incorporating an emission sensor into a gas turbine controller100US 7,032,388 B2General Electric Company · 2006
- Systems for low emission gas turbine energy generation100US 7,513,100 B2General Electric Company · 2009
- Furnace monitoring system97US 4,296,727 AMicro-Burner Systems Corporation · 1981