F02C 9/52
By bleeding or by-passing the working fluid
Official title: by bleeding or by-passing the working fluid
F02C9/52 (By bleeding or by-passing the working fluid) appears on 140 US grants and 153 published applications in this corpus.
Search patents in F02C- Granted patents
- 140
- Published applications
- 153
- Assignees
- 52
- Inventors
- 347
- Latest grant
- 25 Aug 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 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 3 | 2 |
| 2005 | 2 | 4 |
| 2006 | 1 | 3 |
| 2007 | 4 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 3 |
| 2011 | 2 | 7 |
| 2012 | 2 | 2 |
| 2013 | 6 | 5 |
| 2014 | 3 | 10 |
| 2015 | 3 | 9 |
| 2016 | 5 | 11 |
| 2017 | 7 | 14 |
| 2018 | 12 | 12 |
| 2019 | 15 | 8 |
| 2020 | 10 | 8 |
| 2021 | 8 | 12 |
| 2022 | 7 | 8 |
| 2023 | 12 | 6 |
| 2024 | 13 | 9 |
| 2025 | 6 | 7 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for surge margin testing of gas turbine engine using an undersized load component25 Aug 2026US 12,716,815 B2Doosan Enerbility Co., Ltd.
- Actuated frame and tail cone for exhaust channel track selection14 Jul 2026US 12,680,514 B1Rtx Corporation
- Systems and methods for off-grid validation testing with undersized load compressor19 May 2026US 12,631,150 B2Doosan Enerbility Co., Ltd.
- Inlet bleed diversion through rotating detonation rocket engine24 Feb 2026US 12,560,134 B1Venus Aerospace Corp.
- Gas turbine engine having a thrust reverser system with drag link connectors at inter-compressor frame structure17 Feb 2026US 12,553,403 B1General Electric Company
- Turbo-expander overspeed protection20 Aug 2026US 2026/0243203 A1NET Power LLC
- Aircraft engine power management for large generator loads6 Aug 2026US 2026/0226865 A1Honeywell International Inc.
- Exhaust nozzle assembly for an aircraft propulsion system30 Oct 2025US 2025/0334085 A1Pratt & Whitney Canada Corp.
- Operation method for gas turbine and control device for gas turbine21 Aug 2025US 2025/0264061 A1Mitsubishi Heavy Industries, Ltd.
- Systems and methods for off-grid validation testing with undersized load compressor12 Jun 2025US 2025/0188881 A1Doosan Enerbility Co., Ltd.
Most cited
By later US patents
- Power plant start-up method and method of venting the power plant75US 8,266,883 B2General Electric Company · 2012
- Valve control logic for gas turbine recuperator51US 6,463,730 B1Honeywell Power Systems Inc. · 2002
- Dual interstage cooled engine51US 7,926,289 B2General Electric Company · 2011
- Gas turbine control apparatus and gas turbine system using the same41US 6,955,039 B2Mitsubishi Heavy Industries, Ltd. · 2005
- Gas turbine control apparatus and gas turbine system using the same37US 7,234,305 B2Mitsubishi Heavy Industries, Ltd. · 2007