F23C
Methods or apparatus for combustion using fluid fuel or solid fuel suspended
Official title: Methods or apparatus for combustion using fluid fuel or solid fuel suspended in {a carrier gas or} air (burners f23d)
F23C (Methods or apparatus for combustion using fluid fuel or solid fuel suspended) appears on 5,940 US grants and 4,391 published applications in this corpus.
Search patents in F23C- Granted patents
- 5,940
- Published applications
- 4,391
- Assignees
- 2,141
- Inventors
- 10,060
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 46 | 0 |
| 1977 | 73 | 0 |
| 1978 | 65 | 0 |
| 1979 | 56 | 0 |
| 1980 | 64 | 0 |
| 1981 | 105 | 0 |
| 1982 | 97 | 0 |
| 1983 | 86 | 0 |
| 1984 | 116 | 0 |
| 1985 | 99 | 0 |
| 1986 | 95 | 0 |
| 1987 | 115 | 0 |
| 1988 | 92 | 0 |
| 1989 | 126 | 0 |
| 1990 | 140 | 0 |
| 1991 | 119 | 0 |
| 1992 | 113 | 0 |
| 1993 | 120 | 0 |
| 1994 | 135 | 0 |
| 1995 | 142 | 0 |
| 1996 | 124 | 0 |
| 1997 | 107 | 0 |
| 1998 | 142 | 0 |
| 1999 | 149 | 0 |
| 2000 | 155 | 0 |
| 2001 | 144 | 43 |
| 2002 | 117 | 100 |
| 2003 | 92 | 127 |
| 2004 | 119 | 169 |
| 2005 | 102 | 174 |
| 2006 | 77 | 151 |
| 2007 | 69 | 161 |
| 2008 | 70 | 148 |
| 2009 | 96 | 195 |
| 2010 | 95 | 233 |
| 2011 | 116 | 248 |
| 2012 | 119 | 240 |
| 2013 | 149 | 248 |
| 2014 | 188 | 280 |
| 2015 | 184 | 215 |
| 2016 | 182 | 250 |
| 2017 | 194 | 188 |
| 2018 | 186 | 177 |
| 2019 | 191 | 164 |
| 2020 | 162 | 148 |
| 2021 | 121 | 103 |
| 2022 | 102 | 133 |
| 2023 | 110 | 148 |
| 2024 | 95 | 138 |
| 2025 | 104 | 132 |
| 2026 | 75 | 78 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- F23C 2900/00Special features of, or arrangements for combustion apparatus using fluid fuels orIndexing code1,584
- F23C 10/00Fluidised bed combustion apparatus1,071
- F23C 7/00Combustion apparatus characterised by arrangements for air supply1,041
- F23C 6/00Combustion apparatus characterised by the combination of two or more combustion chambers966
- F23C 9/00Combustion apparatus characterised by arrangements for returning combustion products or flue gases801
- F23C 3/00Combustion apparatus characterised by the shape of the combustion chamber610
- F23C 5/00Disposition of burners with respect to the combustion chamber or to one514
- F23C 13/00Apparatus in which combustion takes place in the presence of catalytic material509
All 18 main groupsShow fewer
- F23C 99/00Subject-matter not provided for in other groups of this subclass494
- F23C 2201/00Staged combustionIndexing code470
- F23C 2202/00Fluegas recirculationIndexing code368
- F23C 15/00Apparatus in which combustion takes place in pulses influenced by acoustic resonance271
- F23C 1/00Combustion apparatus specially adapted for combustion of two or more kinds of248
- F23C 2206/00Fluidised bed combustionIndexing code247
- F23C 2203/00Flame cooling methods otherwise than by staging or recirculationIndexing code75
- F23C 2205/00Pulsating combustionIndexing code50
- F23C 2700/00Special arrangements for combustion apparatus using fluent fuelIndexing code49
- F23C 2200/00Combustion techniques for fluent fuelIndexing code8
Recent patents
- Refractory block for low NOx burners with internal flue gas recirculation6 Oct 2026US 12,753,916 B2Honeywell International Inc.
- CLC method and plant with recovery of gaseous oxygen produced by an oxygen carrier29 Sep 2026US 12,747,859 B2Ifp Energies Nouvelles
- Methods and systems for mixing fluids22 Sep 2026US 12,742,545 B2Ekona Power Inc.
- Thermal processing apparatus with a heating device operated with hydrogen, sustainable cremation, free of CO215 Sep 2026US 12,736,220 B2Albert Hesse Familienstiftung
- Arrangement handling purged alcohol-based fuel and a method thereof8 Sep 2026US 12,729,853 B2Alfa Laval Corporate AB
- Ammonia cracking system and method for cracking ammonia8 Oct 2026US 2026/0309325 A1IHI Corporation
- Device and method for injecting a hydrogen-air mixture for a turbine engine burner8 Oct 2026US 2026/0309329 A1Safran
- Compositions, methods, and apparatuses for catalytic combustion1 Oct 2026US 2026/0295564 A1Star Scientific Limited
- Afterburners including methods of making and operating1 Oct 2026US 2026/0302276 A1WATT Fuel Cell Corp.
- Method for performing mechanical work, arrangement for performing mechanical work, and method for converting mechanical energy into electrical energy24 Sep 2026US 2026/0287177 A1
Most cited
By later US patents
- Apparatus for manufacturing a process abatement reactor386US 7,736,600 B2APPLIED Materials.Inc. · 2010
- Heat injection process368US 5,255,742 AShell Oil Company · 1993
- Flameless combustor346US 5,899,269 AShell Oil Company · 1999
- Oil recovery process345US 5,297,626 AShell Oil Company · 1994
- Oil recovery process340US 5,392,854 AShell Oil Company · 1995