F23R 3/50
Combustion chambers comprising an annular flame tube within an annular casing
Official title: Combustion chambers comprising an annular flame tube within an annular casing (toroidal combustion chambers F23R3/52)
F23R3/50 (Combustion chambers comprising an annular flame tube within an annular casing) appears on 633 US grants and 678 published applications in this corpus.
Search patents in F23R- Granted patents
- 633
- Published applications
- 678
- Assignees
- 105
- Inventors
- 1,001
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 10 | 11 |
| 2003 | 8 | 6 |
| 2004 | 12 | 20 |
| 2005 | 7 | 12 |
| 2006 | 12 | 10 |
| 2007 | 5 | 21 |
| 2008 | 6 | 20 |
| 2009 | 14 | 24 |
| 2010 | 20 | 17 |
| 2011 | 16 | 17 |
| 2012 | 17 | 18 |
| 2013 | 8 | 19 |
| 2014 | 15 | 20 |
| 2015 | 16 | 31 |
| 2016 | 18 | 49 |
| 2017 | 14 | 45 |
| 2018 | 35 | 45 |
| 2019 | 42 | 52 |
| 2020 | 58 | 39 |
| 2021 | 54 | 28 |
| 2022 | 36 | 33 |
| 2023 | 39 | 36 |
| 2024 | 42 | 51 |
| 2025 | 28 | 25 |
| 2026 | 25 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Combustion module for a turbomachine6 Oct 2026US 12,753,925 B2Safran Ceramics
- Dome combustor with air blast22 Sep 2026US 12,742,551 B1Rtx Corporation
- Combustor for a gas turbine engine having a looped feature25 Aug 2026US 12,716,590 B2General Electric Company
- Combustor liner having cooling ring with fin having space filling curve28 Jul 2026US 12,693,015 B1Rtx Corporation
- Metal-based fuel and fuel delivery systems7 Jul 2026US 12,674,412 B2Rtx Corporation
- Metal-based fuel and fuel delivery systems1 Oct 2026US 2026/0298136 A1Rtx Corporation
- Turbine engine including a combustor1 Oct 2026US 2026/0298471 A1General Electric Company
- Differential cooling in a small combustor27 Aug 2026US 2026/0251302 A1GE Avio S. r. l.
- Combustor for a gas turbine engine27 Aug 2026US 2026/0251303 A1General Electric Company
- Heat Shield for a Fuel Nozzle of a Turbine Engine13 Aug 2026US 2026/0235288 A1General Electric Company
Most cited
By later US patents
- Mixing ducts for a gas-turbine annular combustion chamber142US 5,839,283 AABB Research Ltd. · 1998
- Star combustor with dilution ports in can portions109US 5,628,182 A1997
- Convectively cooled, single stage, fully premixed fuel/air combustor for gas turbine engine modules101US 5,572,862 A1996
- Rich quick mix combustion system98US 7,185,497 B2Honeywell International Inc. · 2007
- Double dome combustor97US 5,197,289 AGeneral Electric Company · 1993