F02K
Jet-propulsion plants
Official title: JET-PROPULSION PLANTS (features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C7/00, F02C9/00)
F02K (Jet-propulsion plants) appears on 10,704 US grants and 9,924 published applications in this corpus.
Search patents in F02K- Granted patents
- 10,704
- Published applications
- 9,924
- Assignees
- 1,311
- Inventors
- 13,000
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 116 | 0 |
| 1977 | 90 | 0 |
| 1978 | 84 | 0 |
| 1979 | 60 | 0 |
| 1980 | 73 | 0 |
| 1981 | 62 | 0 |
| 1982 | 55 | 0 |
| 1983 | 53 | 0 |
| 1984 | 77 | 0 |
| 1985 | 79 | 0 |
| 1986 | 74 | 0 |
| 1987 | 87 | 0 |
| 1988 | 113 | 0 |
| 1989 | 117 | 0 |
| 1990 | 104 | 0 |
| 1991 | 110 | 0 |
| 1992 | 150 | 0 |
| 1993 | 131 | 0 |
| 1994 | 98 | 0 |
| 1995 | 112 | 0 |
| 1996 | 91 | 0 |
| 1997 | 89 | 0 |
| 1998 | 156 | 0 |
| 1999 | 108 | 0 |
| 2000 | 131 | 0 |
| 2001 | 139 | 18 |
| 2002 | 143 | 94 |
| 2003 | 133 | 138 |
| 2004 | 133 | 171 |
| 2005 | 114 | 180 |
| 2006 | 114 | 184 |
| 2007 | 106 | 192 |
| 2008 | 96 | 288 |
| 2009 | 157 | 326 |
| 2010 | 196 | 357 |
| 2011 | 235 | 260 |
| 2012 | 251 | 291 |
| 2013 | 263 | 436 |
| 2014 | 304 | 393 |
| 2015 | 354 | 476 |
| 2016 | 287 | 648 |
| 2017 | 350 | 602 |
| 2018 | 481 | 666 |
| 2019 | 616 | 538 |
| 2020 | 678 | 773 |
| 2021 | 573 | 480 |
| 2022 | 602 | 502 |
| 2023 | 551 | 539 |
| 2024 | 611 | 493 |
| 2025 | 501 | 462 |
| 2026 | 296 | 417 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- F02K 1/00Plants characterised by the form or arrangement of the jet pipe or4,244
- F02K 3/00Plants including a gas turbine driving a compressor or a ducted fan4,052
- F02K 9/00Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor2,590
- F02K 7/00Plants in which the working fluid is used in a jet only728
- F02K 5/00Plants including an engine, other than a gas turbine, driving a compressor355
- F02K 99/00Subject matter not provided for in other groups of this subclass40
Recent patents
- Aircraft with an unducted fan propulsor6 Oct 2026US 12,752,923 B2General Electric Company
- Hybrid rocket engine fuel grains with radial energy compositional variations6 Oct 2026US 12,753,131 B2Firehawk Aerospace, Inc.
- Combustion mode switching engine6 Oct 2026US 12,753,730 B2PD AeroSpace, LTD.
- Inducer assembly for a turbine engine29 Sep 2026US 12,746,491 B2General Electric Company
- Flexible support structure for a geared architecture gas turbine engine29 Sep 2026US 12,747,675 B2Rtx Corporation
- Transpiration-cooled systems having permeable and non-permeable portions8 Oct 2026US 2026/0307827 A1Blue Origin Manufacturing, LLC
- Radius ratio high-speed shaft rating for turbine engines8 Oct 2026US 2026/0309105 A1General Electric Company
- Modulating internal ballistics in a 3d-printed rocket motor and an additive manufacturing process8 Oct 2026US 2026/0309106 A1X-Bow Launch Systems Inc.
- Transient plasma enhanced combustion device for restartable solid rocket propulsion8 Oct 2026US 2026/0309133 A1The Aerospace Corporation
- Systems and Methods for Object Honing and Testing1 Oct 2026US 2026/0295762 A1Relativity Space, Inc.
Most cited
By later US patents
- Arrangement for controlling fluid jets injected into a fluid stream1,018US 7,976,213 B2United Technologies Corporation · 2011
- Variable area fan exhaust nozzle having mechanically separate sleeve and thrust reverser actuation systems474US 5,778,659 AUnited Technologies Corporation · 1998
- Variable area nozzle for gas turbine engines driven by shape memory alloy actuators396US 6,318,070 B1United Technologies Corporation · 2001
- Low solidity turbofan352US 7,374,403 B2General Electric Company · 2008
- 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