F02C 7/141
Of working fluid
Official title: of working fluid
F02C7/141 (Of working fluid) appears on 990 US grants and 1,072 published applications in this corpus.
Search patents in F02C- Granted patents
- 990
- Published applications
- 1,072
- Assignees
- 299
- Inventors
- 1,833
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 12 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 18 | 6 |
| 2002 | 29 | 20 |
| 2003 | 24 | 17 |
| 2004 | 19 | 33 |
| 2005 | 19 | 28 |
| 2006 | 21 | 28 |
| 2007 | 16 | 24 |
| 2008 | 16 | 16 |
| 2009 | 11 | 36 |
| 2010 | 23 | 24 |
| 2011 | 11 | 22 |
| 2012 | 21 | 44 |
| 2013 | 17 | 55 |
| 2014 | 14 | 62 |
| 2015 | 27 | 49 |
| 2016 | 39 | 65 |
| 2017 | 48 | 70 |
| 2018 | 43 | 68 |
| 2019 | 52 | 69 |
| 2020 | 76 | 62 |
| 2021 | 72 | 45 |
| 2022 | 53 | 41 |
| 2023 | 61 | 57 |
| 2024 | 62 | 62 |
| 2025 | 60 | 45 |
| 2026 | 23 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dilute combustion of hydrogen in retrofitted gas turbine engines6 Oct 2026US 12,753,722 B2University of Florida Research Foundation, Inc.
- Axial flow angled condenser arrangement for an aircraft propulsion system8 Sep 2026US 12,729,648 B2Rtx Corporation
- Rotorcraft with powerplant exhaust sound attenuation25 Aug 2026US 12,715,576 B2Pratt & Whitney Canada Corp.
- Engine component test system with cryogenic cooling system11 Aug 2026US 12,704,437 B2Pratt & Whitney Canada Corp.
- Combustor for a micro-turbine gas generator28 Jul 2026US 12,693,020 B2Jetoptera, Inc.
- Water cooled exhaust duct1 Oct 2026US 2026/0298137 A1Rtx Corporation
- Aircraft propulsion system with air-to-working fluid heat exchanger17 Sep 2026US 2026/0275911 A1Rtx Corporation
- Compressed gas energy storage and recovery system having pressure control6 Aug 2026US 2026/0226859 A1
- Mixture separation in bottoming cycle30 Jul 2026US 2026/0218653 A1Rtx Corporation
- Air turborocket apparatus with precooler heat exchanger at the air intake30 Jul 2026US 2026/0218670 A1Destinus SA
Most cited
By later US patents
- Supercharging system for gas turbines259US 7,065,953 B1Enhanced Turbine Output Holding, LLC · 2006
- Turbine chilling for oil field power generation244US 9,995,218 B2U.S. Well Services, LLC · 2018
- Extracted, cooled, compressed/intercooled, cooling/ combustion air for a gas turbine engine211US 6,050,080 AGeneral Electric Company · 2000
- Gas turbine inlet air combined pressure boost and cooling method and apparatus207US 5,537,813 ACarolina Power & Light Company · 1996
- System for inlet air mass enhancement165US 8,414,673 B2Freudenberg Filtration Technologies India Pvt. Ltd. · 2013