F02C 9/00
Controlling gas-turbine plants
Official title: Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants (controlling air intakes F02C7/057; controlling turbines F01D; controlling compressors F04D27/00; controlling in general G05)
F02C9/00 (Controlling gas-turbine plants) appears on 5,920 US grants and 6,189 published applications in this corpus.
Search patents in F02C- Granted patents
- 5,920
- Published applications
- 6,189
- Assignees
- 674
- Inventors
- 8,755
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 57 | 0 |
| 1977 | 29 | 0 |
| 1978 | 18 | 0 |
| 1979 | 17 | 0 |
| 1980 | 35 | 0 |
| 1981 | 53 | 0 |
| 1982 | 18 | 0 |
| 1983 | 29 | 0 |
| 1984 | 44 | 0 |
| 1985 | 34 | 0 |
| 1986 | 28 | 0 |
| 1987 | 32 | 0 |
| 1988 | 43 | 0 |
| 1989 | 35 | 0 |
| 1990 | 24 | 0 |
| 1991 | 40 | 0 |
| 1992 | 49 | 0 |
| 1993 | 32 | 0 |
| 1994 | 37 | 0 |
| 1995 | 21 | 0 |
| 1996 | 20 | 0 |
| 1997 | 27 | 0 |
| 1998 | 34 | 0 |
| 1999 | 27 | 0 |
| 2000 | 34 | 0 |
| 2001 | 50 | 14 |
| 2002 | 56 | 62 |
| 2003 | 67 | 80 |
| 2004 | 92 | 93 |
| 2005 | 57 | 103 |
| 2006 | 78 | 81 |
| 2007 | 59 | 107 |
| 2008 | 53 | 104 |
| 2009 | 67 | 136 |
| 2010 | 82 | 193 |
| 2011 | 91 | 146 |
| 2012 | 118 | 183 |
| 2013 | 144 | 284 |
| 2014 | 174 | 268 |
| 2015 | 199 | 332 |
| 2016 | 235 | 420 |
| 2017 | 256 | 438 |
| 2018 | 318 | 415 |
| 2019 | 398 | 337 |
| 2020 | 379 | 448 |
| 2021 | 351 | 372 |
| 2022 | 424 | 296 |
| 2023 | 381 | 371 |
| 2024 | 391 | 321 |
| 2025 | 360 | 339 |
| 2026 | 223 | 246 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air bleed slots for gas turbine engines6 Oct 2026US 12,753,725 B1Pratt & Whitney Canada Corp.
- System and method for gas turbine engine rotor bow mitigation29 Sep 2026US 12,747,702 B2Rtx Corporation
- Fluid injection system and method for mitigating rotating stall in turbine engine29 Sep 2026US 12,747,705 B2GE Vernova Infrastructure Technology LLC
- Methods and apparatus for a cryogenic fuel distribution system using a bypass29 Sep 2026US 12,747,706 B2GE Avio S. r. l.
- Fueling schedule29 Sep 2026US 12,747,707 B2ROLLS-ROYCE plc
- Variable bleed valve assemblies8 Oct 2026US 2026/0309077 A1General Electric Company
- System and method for controlling contrail formation8 Oct 2026US 2026/0309079 A1Rtx Corporation
- Gas turbine engine having cooling systems8 Oct 2026US 2026/0309082 A1General Electric Company
- Hydrogen supply system for an aircraft engine with a turbo-pump and a low-pressure burner8 Oct 2026US 2026/0309084 A1Airbus Operations GmbH
- Gas turbine propulsion system with variable pitch fan and method for operating the system8 Oct 2026US 2026/0309094 A1Rtx Corporation
Most cited
By later US patents
- Method and system of controlling a jet engine for avoiding engine surge341US 4,130,872 AThe United States of America as represented by the Secretary of the Air Force · 1978
- Synthesis gas production system and method299US 6,085,512 ASyntroleum Corporation · 2000
- Coal gasification power generation plant280US 4,442,665 AGeneral Electric Company · 1984
- Control system for variable pitch fan propulsor276US 3,932,058 AUnited Technologies Corporation · 1976
- Adaptive model-based control systems and methods for controlling a gas turbine225US 6,823,675 B2General Electric Company · 2004