F23R 3/48
Flame tube interconnectors
Official title: Flame tube interconnectors, e.g. cross-over tubes
F23R3/48 (Flame tube interconnectors) appears on 62 US grants and 60 published applications in this corpus.
Search patents in F23R- Granted patents
- 62
- Published applications
- 60
- Assignees
- 28
- Inventors
- 177
- Latest grant
- 30 Jun 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 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 4 |
| 2013 | 2 | 3 |
| 2014 | 1 | 5 |
| 2015 | 2 | 5 |
| 2016 | 6 | 4 |
| 2017 | 1 | 7 |
| 2018 | 6 | 7 |
| 2019 | 5 | 3 |
| 2020 | 3 | 5 |
| 2021 | 6 | 0 |
| 2022 | 4 | 3 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cross fire tube installation/removal methods and apparatus30 Jun 2026US 12,669,246 B2GE Vernova Infrastructure Technology LLC
- Gas turbine6 Aug 2024US 12,055,298 B2Honda Motor Co., Ltd.
- Combustor having a wake energizer18 Apr 2023US 11,629,857 B2General Electric Company
- Cross-fire tube for gas turbine with axially spaced purge air hole pairs22 Nov 2022US 11,506,391 B1General Electric Company
- Stand-off device for double-skin combustor liner6 Sep 2022US 11,435,078 B2Pratt & Whitney Canada Corp.
- Cross fire tube installation/removal methods and apparatus24 Sep 2026US 2026/0287178 A1GE Vernova Infrastructure Technology LLC
- Gas turbine4 Apr 2024US 2024/0110703 A1Honda Motor Co., Ltd.
- Combustor having a wake energizer6 Oct 2022US 2022/0316708 A1General Electric Company
- Gas turbine combustor, gas turbine, and combustion method for oil fuel15 Sep 2022US 2022/0290611 A1Mitsubishi Heavy Industries, Ltd.
- Turbomachine combustion chamber10 Mar 2022US 2022/0074595 A1
Most cited
By later US patents
- Combusting system, remodeling method for combusting system, and fuel injection method for combusting system28US 8,082,724 B2Hitachi, Ltd. · 2011
- Spring loaded cross-fire tube23US 5,361,577 AGeneral Electric Company · 1994
- Cross-ignition assembly for combustion apparatus22US 4,249,372 AGeneral Electric Company · 1981
- Flow sleeve with tabbed direct combustion liner cooling air21US 8,109,099 B2United Technologies Corporation · 2012
- Impingement cooled crossfire tube assembly in multiple-combustor gas turbine engine18US 5,001,896 A1991