F23R 3/46
Combustion chambers comprising an annular arrangement of several essentially tubular flame tubes
Official title: Combustion chambers comprising an annular arrangement of {several essentially tubular} flame tubes within a common annular casing or within individual casings
F23R3/46 (Combustion chambers comprising an annular arrangement of several essentially tubular flame tubes) appears on 345 US grants and 416 published applications in this corpus.
Search patents in F23R- Granted patents
- 345
- Published applications
- 416
- Assignees
- 73
- Inventors
- 774
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 3 |
| 2004 | 3 | 5 |
| 2005 | 4 | 5 |
| 2006 | 4 | 3 |
| 2007 | 3 | 2 |
| 2008 | 3 | 5 |
| 2009 | 0 | 5 |
| 2010 | 3 | 11 |
| 2011 | 3 | 14 |
| 2012 | 12 | 20 |
| 2013 | 9 | 20 |
| 2014 | 9 | 43 |
| 2015 | 19 | 39 |
| 2016 | 24 | 24 |
| 2017 | 24 | 42 |
| 2018 | 26 | 34 |
| 2019 | 29 | 33 |
| 2020 | 32 | 29 |
| 2021 | 39 | 17 |
| 2022 | 29 | 17 |
| 2023 | 14 | 16 |
| 2024 | 17 | 13 |
| 2025 | 9 | 8 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Combustion device comprising orthogonally arranged channels8 Sep 2026US 12,729,856 B2Hanwha Aerospace Co., Ltd.
- Cross fire tube installation/removal methods and apparatus30 Jun 2026US 12,669,246 B2GE Vernova Infrastructure Technology LLC
- Gas turbine combustor and gas turbine26 May 2026US 12,638,182 B2Mitsubishi Heavy Industries, Ltd.
- Combustor with resonator for gas turbine engine21 Apr 2026US 12,607,355 B2Siemens Energy Global GmbH & Co. KG
- Compact turbomachine combustor17 Feb 2026US 12,553,385 B2GE Vernova Infrastructure Technology LLC
- Cross fire tube installation/removal methods and apparatus24 Sep 2026US 2026/0287178 A1GE Vernova Infrastructure Technology LLC
- Cylinder for combustor, combustor, and gas turbine13 Aug 2026US 2026/0235052 A1Mitsubishi Heavy Industries, Ltd.
- Combustor, combustor system, and gas turbine30 Jul 2026US 2026/0218908 A1Mitsubishi Heavy Industries, Ltd.
- Method for operating gas turbine2 Jul 2026US 2026/0185714 A1Mitsubishi Heavy Industries, Ltd.
- Cylindrical body4 Jun 2026US 2026/0153239 A1Mitsubishi Heavy Industries Aero Engines, Ltd.
Most cited
By later US patents
- Silo/can-annular low emissions combustor101US 6,374,594 B1Power Systems Mfg., LLC · 2002
- Can combustor for a gas turbine engine91US 6,772,583 B2Siemens Westinghouse Power Corporation · 2004
- Method of tuning individual combustion chambers in a turbine based on a combustion chamber stratification index49US 7,451,601 B2General Electric Company · 2008
- Low NO.sub.x combustor46US 5,285,632 AGeneral Electric Company · 1994
- Combustor of gas turbine with features for vibration reduction and increased cooling45US 4,297,843 AHitachi, Ltd. · 1981