F05D 2220/325
To drive unshrouded, high solidity propeller
Official title: to drive unshrouded, high solidity propeller
F05D2220/325 (To drive unshrouded, high solidity propeller) appears on 181 US grants and 217 published applications in this corpus.
Search patents in F05D- Granted patents
- 181
- Published applications
- 217
- Assignees
- 41
- Inventors
- 309
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 3 | 0 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 13 |
| 2011 | 1 | 8 |
| 2012 | 6 | 7 |
| 2013 | 6 | 9 |
| 2014 | 7 | 8 |
| 2015 | 10 | 11 |
| 2016 | 7 | 13 |
| 2017 | 11 | 12 |
| 2018 | 7 | 8 |
| 2019 | 9 | 6 |
| 2020 | 17 | 15 |
| 2021 | 10 | 23 |
| 2022 | 16 | 9 |
| 2023 | 17 | 17 |
| 2024 | 26 | 18 |
| 2025 | 12 | 10 |
| 2026 | 9 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Open rotor aircraft propulsion system with multi- gear system geartrain23 Jun 2026US 12,662,967 B2Rtx Corporation
- Gas turbine engine16 Jun 2026US 12,655,802 B2General Electric Company
- Overall engine efficiency rating for turbomachine engines12 May 2026US 12,624,662 B2GE Avio S. r. l.
- Methods and apparatus to reduce deflection of an airfoil7 Apr 2026US 12,595,740 B2General Electric Company
- Unducted propulsion system7 Apr 2026US 12,595,760 B2General Electric Company
- Unducted Propulsion System24 Sep 2026US 2026/0285476 A1General Electric Company
- Air system for aircraft propulsion system electric machine13 Aug 2026US 2026/0233849 A1Rtx Corporation
- Gas turbine engine13 Aug 2026US 2026/0235038 A1General Electric Company
- 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
Most cited
By later US patents
- Nested core gas turbine engine195US 7,219,490 B2D-Star Engineering · 2007
- Compact epicyclic gear carrier99US 7,104,918 B2Pratt & Whitney Canada Corp. · 2006
- Ultra-efficient propulsor with an augmentor fan circumscribing a turbofan98US 8,689,538 B2The Boeing Company · 2014
- Immersed core flow inlet between rotor blade and stator vane for an unducted fan gas turbine70US 10,399,664 B2General Electric Company · 2019
- Hybrid propulsive engine including at least one independently rotatable compressor stator70US 8,549,833 B2The Invention Science Fund I, LLC · 2013