F23R 3/44
Combustion chambers comprising a single tubular flame tube within a tubular casing
Official title: Combustion chambers comprising a {single} tubular flame tube within a tubular casing (reverse-flow combustion chambers F23R3/54)
F23R3/44 (Combustion chambers comprising a single tubular flame tube within a tubular casing) appears on 90 US grants and 106 published applications in this corpus.
Search patents in F23R- Granted patents
- 90
- Published applications
- 106
- Assignees
- 53
- Inventors
- 298
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 3 |
| 2010 | 1 | 4 |
| 2011 | 2 | 3 |
| 2012 | 3 | 4 |
| 2013 | 4 | 6 |
| 2014 | 3 | 4 |
| 2015 | 4 | 12 |
| 2016 | 6 | 15 |
| 2017 | 4 | 11 |
| 2018 | 13 | 7 |
| 2019 | 6 | 7 |
| 2020 | 12 | 3 |
| 2021 | 6 | 7 |
| 2022 | 6 | 4 |
| 2023 | 3 | 2 |
| 2024 | 3 | 3 |
| 2025 | 3 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Burner with two-layer vortex countercurrent flow21 Oct 2025US 12,449,129 B2Innorom IV Holdings Innovation and Ventures LTD.
- Method for manufacturing a flame tube for a turbomachine1 Jul 2025US 12,345,418 B2Safran Helicopter Engines
- Ultra compact combustor27 May 2025US 12,312,995 B2General Electric Company
- Gas turbine combuster17 Sep 2024US 12,092,330 B2Mitsubishi Heavy Industries, Ltd.
- Combustion device having a flameless combustion chamber, use of such a device and electricity production or energy cogeneration apparatus comprising such a device28 May 2024US 11,994,296 B2Mitis
- Burner assembly, gas turbine combustor, and gas turbine6 Aug 2026US 2026/0227067 A1Mitsubishi Heavy Industries, Ltd.
- Jet burner apparatus25 Jun 2026US 2026/0177234 A1Dürr Systems AG
- Hydrogen-fired combustion chamber system, method and plant26 Sep 2024US 2024/0318818 A1Siemens Energy Global GmbH & Co. KG
- Burner with a bilaminar counterdirectional vortex flow28 Mar 2024US 2024/0102654 A1
- Regenerative cooling and adjustable throat for rotating detonation engine7 Mar 2024US 2024/0077028 A1Rtx Corporation
Most cited
By later US patents
- Closed-cycle gas turbine chemical processor147US 4,528,811 AGeneral Electric Company · 1985
- Gas turbine combustor127US 4,898,001 AHitachi, Ltd. · 1990
- Gas turbine engine with recuperator55US 5,855,112 AHonda Giken Kogyo Kabushiki Kaisha · 1999
- Gas turbine engine and combustor30US 8,776,525 B2Rolls-Royce North American Technologies Inc. · 2014
- High efficiency heat transfer structure29US 6,122,917 AAlstom Gas Turbines Limited · 2000