F05D 2220/323
For aircraft propulsion
Official title: for aircraft propulsion, e.g. jet engines
F05D2220/323 (For aircraft propulsion) appears on 3,325 US grants and 4,015 published applications in this corpus.
Search patents in F05D- Granted patents
- 3,325
- Published applications
- 4,015
- Assignees
- 245
- Inventors
- 5,160
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 3 | 1 |
| 2004 | 1 | 7 |
| 2005 | 3 | 2 |
| 2006 | 2 | 5 |
| 2007 | 4 | 4 |
| 2008 | 2 | 5 |
| 2009 | 3 | 5 |
| 2010 | 1 | 7 |
| 2011 | 2 | 7 |
| 2012 | 6 | 15 |
| 2013 | 6 | 28 |
| 2014 | 11 | 16 |
| 2015 | 7 | 52 |
| 2016 | 36 | 223 |
| 2017 | 69 | 354 |
| 2018 | 154 | 409 |
| 2019 | 310 | 356 |
| 2020 | 434 | 470 |
| 2021 | 384 | 456 |
| 2022 | 430 | 410 |
| 2023 | 454 | 380 |
| 2024 | 460 | 306 |
| 2025 | 336 | 217 |
| 2026 | 191 | 279 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aircraft with an unducted fan propulsor6 Oct 2026US 12,752,923 B2General Electric Company
- Bearing for turbomachine variable pitch stator vane pivot, stator vane comprising such a bearing and turbomachine comprising such stator vanes6 Oct 2026US 12,753,705 B2Safran Aircraft Engines
- Breather system for aircraft engine6 Oct 2026US 12,753,709 B1Pratt & Whitney Canada Corp.
- Reliable gearbox for gas turbine engine6 Oct 2026US 12,753,724 B2ROLLS-ROYCE plc
- Air system for aircraft propulsion system electric machine29 Sep 2026US 12,747,026 B2Rtx Corporation
- Turbofan engine including a fan actuation system8 Oct 2026US 2026/0309036 A1General Electric Company
- Axial pump with integrated seal8 Oct 2026US 2026/0309043 A1Pratt & Whitney Canada Corp.
- Aircraft engine with lubricant system having windmilling configuration8 Oct 2026US 2026/0309050 A1Pratt & Whitney Canada Corp.
- Aircraft engine with lubricant system having windmilling configuration8 Oct 2026US 2026/0309051 A1Pratt & Whitney Canada Corp.
- Liquid hydrogen pumping system8 Oct 2026US 2026/0309078 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Nested core gas turbine engine195US 7,219,490 B2D-Star Engineering · 2007
- Acoustic abatement method and apparatus119US 3,936,606 A1976
- Geared architecture for high speed and small volume fan drive turbine87US 8,747,055 B2United Technologies Corporation · 2014
- Active control of unsteady motion phenomena in turbomachinery82US 5,005,353 AROLLS-ROYCE plc · 1991
- Thermal management system65US 10,364,750 B2General Electric Company · 2019