F05D 2220/324
To drive unshrouded, low solidity propeller
Official title: to drive unshrouded, low solidity propeller
F05D2220/324 (To drive unshrouded, low solidity propeller) appears on 168 US grants and 184 published applications in this corpus.
Search patents in F05D- Granted patents
- 168
- Published applications
- 184
- Assignees
- 44
- Inventors
- 318
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 6 |
| 2006 | 6 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 0 | 5 |
| 2010 | 1 | 12 |
| 2011 | 1 | 9 |
| 2012 | 6 | 6 |
| 2013 | 9 | 7 |
| 2014 | 8 | 10 |
| 2015 | 6 | 8 |
| 2016 | 4 | 10 |
| 2017 | 6 | 7 |
| 2018 | 6 | 18 |
| 2019 | 15 | 12 |
| 2020 | 22 | 9 |
| 2021 | 10 | 12 |
| 2022 | 11 | 6 |
| 2023 | 11 | 12 |
| 2024 | 20 | 16 |
| 2025 | 12 | 5 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust duct for hybrid aircraft powerplant24 Mar 2026US 12,583,609 B2Pratt & Whitney Canada Corp.
- Gas turbine engine27 Jan 2026US 12,535,037 B2GE Avio S. r. l.
- Serviceable propeller shaft zero air gap seal6 Jan 2026US 12,516,609 B2Pratt & Whitney Canada Corp.
- Turbomachine comprising a speed reduction gear integrating an electric machine6 Jan 2026US 12,516,634 B2Safran Transmission Systems
- Open rotor with fixed guide vane/stator9 Dec 2025US 12,492,711 B1Rtx Corporation
- Air system for aircraft propulsion system electric machine13 Aug 2026US 2026/0233849 A1Rtx Corporation
- Air system for aircraft propulsion system electric machine13 Aug 2026US 2026/0235075 A1Rtx Corporation
- Air system for aircraft propulsion system electric machine13 Aug 2026US 2026/0235076 A1Rtx Corporation
- Aircraft propulsion assembly16 Jul 2026US 2026/0201851 A1General Electric Company
- Aircraft propulsion system with selectively rotatable open propulsor rotor16 Apr 2026US 2026/0104011 A1Rtx Corporation
Most cited
By later US patents
- Nested core gas turbine engine195US 7,219,490 B2D-Star Engineering · 2007
- Compound propulsor99US 4,446,696 AGeneral Electric Company · 1984
- Ultra-efficient propulsor with an augmentor fan circumscribing a turbofan98US 8,689,538 B2The Boeing Company · 2014
- Hybrid propulsive engine including at least one independently rotatable compressor stator70US 8,549,833 B2The Invention Science Fund I, LLC · 2013
- Aeroengine starter/generator arrangement68US 8,350,398 B2ROLLS-ROYCE plc · 2013