F05D 2220/328
Providing direct vertical lift
Official title: providing direct vertical lift
F05D2220/328 (Providing direct vertical lift) appears on 37 US grants and 39 published applications in this corpus.
Search patents in F05D- Granted patents
- 37
- Published applications
- 39
- Assignees
- 24
- Inventors
- 64
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 5 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 3 |
| 2011 | 1 | 3 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 4 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 3 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 3 | 0 |
| 2021 | 0 | 2 |
| 2022 | 2 | 0 |
| 2023 | 2 | 5 |
| 2024 | 4 | 2 |
| 2025 | 2 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aircraft propulsion system with engine assembly, intercooler, and turbocompressor assembly17 Mar 2026US 12,576,979 B2Pratt & Whitney Canada Corp.
- Aircraft propulsion system with variable speed rotating structure20 Jan 2026US 12,529,349 B2Rtx Corporation
- Hybrid propulsion drive train system for tiltrotor aircraft5 Aug 2025US 12,377,994 B1Textron Innovations Inc.
- Dual speed planetary gear system for convertible engines7 Jan 2025US 12,187,451 B1Rtx Corporation
- Selective power distribution for an aircraft propulsion system29 Oct 2024US 12,129,802 B2Rtx Corporation
- Aircraft propulsion system4 Sep 2025US 2025/0276795 A1Pratt & Whitney Canada Corp.
- Hybrid propulsion drive train system for tiltrotor aircraft31 Jul 2025US 2025/0242929 A1Textron Innovations Inc.
- Aircraft propulsion system with auxiliary turbine system3 Apr 2025US 2025/0109707 A1Rtx Corporation
- Selective power distribution for an aircraft propulsion system7 Mar 2024US 2024/0077033 A1Raytheon Technologies Corporation
- Stator assembly15 Feb 2024US 2024/0052751 A1Safran
Most cited
By later US patents
- Nested core gas turbine engine195US 7,219,490 B2D-Star Engineering · 2007
- Nested core gas turbine engine61US 6,647,707 B22003
- Aircraft having a lift/propulsion unit47US 8,317,126 B2ROLLS-ROYCE plc · 2012
- Coaxial drive propulsion system for aerial vehicles, and associated systems and methods35US 9,994,305 B1Swift Engineering, Inc. · 2018
- Valve for diverting fluid flows in turbomachines16US 4,587,803 AROLLS-ROYCE plc · 1986