F02K 3/072
With counter-rotating
Official title: with counter-rotating {, e.g. fan} rotors
F02K3/072 (With counter-rotating) appears on 283 US grants and 309 published applications in this corpus.
Search patents in F02K- Granted patents
- 283
- Published applications
- 309
- Assignees
- 42
- Inventors
- 377
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 8 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 4 |
| 2004 | 6 | 4 |
| 2005 | 0 | 4 |
| 2006 | 0 | 16 |
| 2007 | 8 | 14 |
| 2008 | 7 | 11 |
| 2009 | 13 | 10 |
| 2010 | 11 | 18 |
| 2011 | 10 | 11 |
| 2012 | 11 | 18 |
| 2013 | 11 | 26 |
| 2014 | 15 | 17 |
| 2015 | 24 | 17 |
| 2016 | 6 | 21 |
| 2017 | 14 | 20 |
| 2018 | 10 | 22 |
| 2019 | 19 | 11 |
| 2020 | 26 | 20 |
| 2021 | 16 | 11 |
| 2022 | 13 | 6 |
| 2023 | 10 | 9 |
| 2024 | 10 | 7 |
| 2025 | 5 | 2 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Gearbox assemblies with idler gears9 Jun 2026US 12,650,094 B2GE Avio S. r. l.
- Variable pitch fans for turbomachinery engines6 Jan 2026US 12,516,646 B2General Electric Company
- Architecture of a turbomachine with counter-rotating turbine23 Dec 2025US 12,503,976 B2Safran Aircraft Engines
- Gas turbine for twin-rotor aircraft2 Dec 2025US 12,486,818 B2Safran Aircraft Engines
- Aircraft propulsion system with auxiliary flowpath system30 Jul 2026US 2026/0218655 A1Rtx Corporation
- Hybrid aircraft propulsion system23 Jul 2026US 2026/0210264 A1Rtx Corporation
- Symmetric Open Propulsor Rotating Patterns for Aircraft16 Jul 2026US 2026/0200580 A1Rtx Corporation
- Symmetric Open Propulsor Rotating Patterns for Aircraft16 Jul 2026US 2026/0200583 A1Rtx Corporation
- Gas turbine engine having composite fan blades16 Jul 2026US 2026/0201842 A1General Electric Company
Most cited
By later US patents
- Aircraft engine with inter-turbine engine frame supported counter rotating low pressure turbine rotors329US 6,619,030 B1General Electric Company · 2003
- Counter rotating aircraft gas turbine engine with high overall pressure ratio compressor248US 6,732,502 B2General Electric Company · 2004
- Geared counterrotating turbine/fan propulsion system226US 5,010,729 AGeneral Electric Company · 1991
- High bypass ratio counterrotating turbofan engine172US 4,790,133 AGeneral Electric Company · 1988
- Aircraft gas turbine engine having variable torque split counter rotating low pressure turbines and booster aft of counter rotating fans115US 6,763,654 B2General Electric Company · 2004