F23R 3/00
Continuous combustion chambers using liquid or gaseous fuel
F23R3/00 (Continuous combustion chambers using liquid or gaseous fuel) appears on 7,960 US grants and 8,027 published applications in this corpus.
Search patents in F23R- Granted patents
- 7,960
- Published applications
- 8,027
- Assignees
- 747
- Inventors
- 8,667
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 56 | 0 |
| 1977 | 44 | 0 |
| 1978 | 35 | 0 |
| 1979 | 31 | 0 |
| 1980 | 54 | 0 |
| 1981 | 54 | 0 |
| 1982 | 31 | 0 |
| 1983 | 33 | 0 |
| 1984 | 42 | 0 |
| 1985 | 33 | 0 |
| 1986 | 30 | 0 |
| 1987 | 29 | 0 |
| 1988 | 47 | 0 |
| 1989 | 56 | 0 |
| 1990 | 61 | 0 |
| 1991 | 59 | 0 |
| 1992 | 84 | 0 |
| 1993 | 101 | 0 |
| 1994 | 131 | 0 |
| 1995 | 85 | 0 |
| 1996 | 75 | 0 |
| 1997 | 90 | 0 |
| 1998 | 82 | 0 |
| 1999 | 84 | 0 |
| 2000 | 93 | 0 |
| 2001 | 116 | 32 |
| 2002 | 140 | 115 |
| 2003 | 119 | 130 |
| 2004 | 126 | 210 |
| 2005 | 132 | 205 |
| 2006 | 172 | 170 |
| 2007 | 90 | 235 |
| 2008 | 84 | 175 |
| 2009 | 133 | 265 |
| 2010 | 155 | 384 |
| 2011 | 181 | 293 |
| 2012 | 237 | 349 |
| 2013 | 258 | 412 |
| 2014 | 244 | 478 |
| 2015 | 317 | 391 |
| 2016 | 376 | 578 |
| 2017 | 277 | 518 |
| 2018 | 343 | 495 |
| 2019 | 457 | 424 |
| 2020 | 502 | 389 |
| 2021 | 406 | 284 |
| 2022 | 369 | 291 |
| 2023 | 308 | 323 |
| 2024 | 357 | 326 |
| 2025 | 308 | 295 |
| 2026 | 233 | 260 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F23R 3/28Continuous combustion chambers using liquid or gaseous fuel: characterised by the fuel4,199
- F23R 3/02Continuous combustion chambers using liquid or gaseous fuel: characterised by the air-flow3,723
- F23R 3/42Continuous combustion chambers using liquid or gaseous fuel: characterised by the arrangement2,167
- F23R 3/002Wall structures1,994
- F23R 3/007Constructed mainly of ceramic components559
- F23R 3/005Combined with pressure or heat exchangers529
- F23R 3/40Continuous combustion chambers using liquid or gaseous fuel: characterised by the use301
Recent patents
- Combustor assembly for a gas turbine engine6 Oct 2026US 12,753,921 B1General Electric Company
- Turbine engine fuel injector with non-circular nozzle passage6 Oct 2026US 12,753,922 B2Rtx Corporation
- Gas turbine engine including hydrogen-compatible fuel-air mixer with multi-jet mixing tube6 Oct 2026US 12,753,923 B2General Electric Company
- Coated components for coke abatement in gas turbine engines6 Oct 2026US 12,753,924 B2General Electric Company
- Combustion module for a turbomachine6 Oct 2026US 12,753,925 B2Safran Ceramics
- Gas turbine operation method and gas turbine equipment capable of executing same8 Oct 2026US 2026/0309099 A1Mitsubishi Heavy Industries, Ltd.
- Swirler for a fuel nozzle assembly of a gas turbine engine8 Oct 2026US 2026/0309328 A1General Electric Company
- Device and method for injecting a hydrogen-air mixture for a turbine engine burner8 Oct 2026US 2026/0309329 A1Safran
- Annular vortex combustor for a turbine engine8 Oct 2026US 2026/0309330 A1General Electric Company
- Metal-based fuel and fuel delivery systems1 Oct 2026US 2026/0298136 A1Rtx Corporation
Most cited
By later US patents
- Substoichiometric combustion of low heating value gases325US 4,381,641 AGulf Research & Development Company · 1983
- Power generating system302US 4,754,607 AAllied-Signal Inc. · 1988
- Utilization of energy obtained by substoichiometric combustion of low heating value gases296US 4,299,086 AGulf Research & Development Company · 1981
- Self-contained energy center for producing mechanical, electrical, and heat energy199US 6,107,693 ASolo Energy Corporation · 2000
- Nested core gas turbine engine195US 7,219,490 B2D-Star Engineering · 2007