F02C 7/08
Heating air supply before combustion
Official title: Heating air supply before combustion, e.g. by exhaust gases
F02C7/08 (Heating air supply before combustion) appears on 725 US grants and 740 published applications in this corpus.
Search patents in F02C- Granted patents
- 725
- Published applications
- 740
- Assignees
- 289
- Inventors
- 1,318
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 8 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 15 | 0 |
| 2001 | 31 | 8 |
| 2002 | 13 | 27 |
| 2003 | 34 | 22 |
| 2004 | 19 | 30 |
| 2005 | 17 | 18 |
| 2006 | 15 | 20 |
| 2007 | 13 | 15 |
| 2008 | 7 | 17 |
| 2009 | 6 | 14 |
| 2010 | 11 | 26 |
| 2011 | 9 | 26 |
| 2012 | 17 | 29 |
| 2013 | 15 | 44 |
| 2014 | 10 | 37 |
| 2015 | 15 | 44 |
| 2016 | 35 | 56 |
| 2017 | 31 | 34 |
| 2018 | 33 | 43 |
| 2019 | 37 | 30 |
| 2020 | 35 | 33 |
| 2021 | 36 | 33 |
| 2022 | 40 | 33 |
| 2023 | 34 | 28 |
| 2024 | 35 | 27 |
| 2025 | 33 | 23 |
| 2026 | 13 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High temperature anti-ice systems for aircraft engines8 Sep 2026US 12,729,645 B2General Electric Company
- Combustor for a micro-turbine gas generator28 Jul 2026US 12,693,020 B2Jetoptera, Inc.
- Actuated frame and tail cone for exhaust channel track selection14 Jul 2026US 12,680,514 B1Rtx Corporation
- Power generating system for a gas turbine engine comprising a compressor bleed air to exhaust heat exchanger16 Jun 2026US 12,655,793 B1General Electric Company
- Combustor inlet plenum and baffle26 May 2026US 12,638,180 B1Pratt & Whitney Canada Corp.
- Integral Engine Inlet Frame Air-Cooled Oil Cooling Apparatus10 Sep 2026US 2026/0266219 A1General Electric Company
- Mixture separation in bottoming cycle30 Jul 2026US 2026/0218653 A1Rtx Corporation
- Combustion system having a fuel cell to produce blue hydrogen30 Jul 2026US 2026/0218905 A1GE Infrastructure Technology LLC
- Exhaust heat recovery for a mobile power generation system18 Jun 2026US 2026/0168368 A1Typhon Technology Solutions (U.S.), LLC
- Turbine recouperator18 Jun 2026US 2026/0168438 A1
Most cited
By later US patents
- Power generating system302US 4,754,607 AAllied-Signal Inc. · 1988
- Microcomponent chemical process sheet architecture299US 5,811,062 ABattelle Memorial Institute · 1998
- Gas turbine inlet heating system using jet blower203US 5,560,195 AGeneral Electric Company · 1996
- 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