F23R
Generating combustion products of high pressure or high velocity
Official title: GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures F23C10/16)
F23R (Generating combustion products of high pressure or high velocity) appears on 8,376 US grants and 8,494 published applications in this corpus.
Search patents in F23R- Granted patents
- 8,376
- Published applications
- 8,494
- Assignees
- 828
- Inventors
- 9,267
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 59 | 0 |
| 1977 | 44 | 0 |
| 1978 | 37 | 0 |
| 1979 | 34 | 0 |
| 1980 | 56 | 0 |
| 1981 | 57 | 0 |
| 1982 | 33 | 0 |
| 1983 | 34 | 0 |
| 1984 | 42 | 0 |
| 1985 | 37 | 0 |
| 1986 | 30 | 0 |
| 1987 | 30 | 0 |
| 1988 | 47 | 0 |
| 1989 | 57 | 0 |
| 1990 | 64 | 0 |
| 1991 | 60 | 0 |
| 1992 | 85 | 0 |
| 1993 | 101 | 0 |
| 1994 | 134 | 0 |
| 1995 | 88 | 0 |
| 1996 | 83 | 0 |
| 1997 | 96 | 0 |
| 1998 | 86 | 0 |
| 1999 | 90 | 0 |
| 2000 | 96 | 0 |
| 2001 | 118 | 34 |
| 2002 | 150 | 131 |
| 2003 | 130 | 137 |
| 2004 | 139 | 226 |
| 2005 | 148 | 222 |
| 2006 | 180 | 180 |
| 2007 | 94 | 253 |
| 2008 | 90 | 186 |
| 2009 | 140 | 290 |
| 2010 | 170 | 411 |
| 2011 | 188 | 316 |
| 2012 | 252 | 377 |
| 2013 | 281 | 446 |
| 2014 | 270 | 505 |
| 2015 | 331 | 418 |
| 2016 | 402 | 599 |
| 2017 | 290 | 536 |
| 2018 | 363 | 518 |
| 2019 | 481 | 438 |
| 2020 | 513 | 411 |
| 2021 | 419 | 302 |
| 2022 | 384 | 303 |
| 2023 | 328 | 333 |
| 2024 | 368 | 341 |
| 2025 | 320 | 313 |
| 2026 | 247 | 268 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- F23R 3/00Continuous combustion chambers using liquid or gaseous fuel7,960
- F23R 2900/00Special features of, or arrangements for continuous combustion chambersIndexing code3,492
- F23R 7/00Intermittent or explosive combustion chambers194
- F23R 5/00Continuous combustion chambers using solid or pulverulent fuel25
Recent patents
- Combustion mode switching engine6 Oct 2026US 12,753,730 B2PD AeroSpace, LTD.
- 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
- 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