B64C 11/325
Comprising feathering, braking or stopping systems
Official title: {comprising feathering, braking or stopping systems}
B64C11/325 (Comprising feathering, braking or stopping systems) appears on 71 US grants and 73 published applications in this corpus.
Search patents in B64C- Granted patents
- 71
- Published applications
- 73
- Assignees
- 32
- Inventors
- 133
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 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 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 2 | 1 |
| 2015 | 2 | 3 |
| 2016 | 4 | 5 |
| 2017 | 3 | 6 |
| 2018 | 5 | 11 |
| 2019 | 8 | 2 |
| 2020 | 6 | 8 |
| 2021 | 11 | 6 |
| 2022 | 4 | 3 |
| 2023 | 4 | 3 |
| 2024 | 2 | 4 |
| 2025 | 9 | 4 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Battery and engine architecture for VTOL aircraft25 Aug 2026US 12,715,578 B2Archer Aviation Inc.
- Propeller propulsion system for aircraft including means for adjusting the blade angle of the blades of the propeller and aircraft including such a propulsion system28 Jul 2026US 12,691,997 B2Airbus Operations GmbH
- Propulsion system blade with internal actuator17 Feb 2026US 12,552,527 B2Archer Aviation Inc.
- Rotor assembly25 Nov 2025US 12,479,570 B2Supernal, LLC
- Hub assembly having a pitch lock system25 Nov 2025US 12,480,414 B2GE Avio S. r. l.
- Method and avionics device for controlling the pitch angle of a fan or propeller of an aircraft powertrain27 Aug 2026US 2026/0249980 A1Airbus Operations GmbH
- Method and avionics device for controlling the pitch angle of a fan or propeller of an aircraft powertrain27 Aug 2026US 2026/0250015 A1Airbus Operations GmbH
- Battery and engine architecture for vtol aircraft13 Aug 2026US 2026/0233832 A1Archer Aviation Inc.
- Blade pitch angle changing mechanism6 Aug 2026US 2026/0225707 A1Honda Motor Co., Ltd.
- Asynchronous airfoil pitch adjustment for aircraft propulsion system6 Aug 2026US 2026/0226837 A1Rtx Corporation
Most cited
By later US patents
- EVTOL aircraft using large, variable speed tilt rotors58US 10,351,235 B2Karem Aircraft, Inc. · 2019
- Propeller pitch control33US 5,213,471 AGeneral Electric Company · 1993
- Gate drive circuit and method of operating the same29US 10,263,577 B2Advanced Energy Industries, Inc. · 2019
- Pitch stop assembly for variable pitch propulsor28US 5,199,850 AUnited Technologies Corporation · 1993
- Single blade rotor system for use in a vertical takeoff and landing (VTOL) aircraft18US 9,334,049 B1Amazon Technologies, Inc. · 2016