B64U 30/24
Coaxial rotors
B64U30/24 (Coaxial rotors) appears on 207 US grants and 272 published applications in this corpus.
Search patents in B64U- Granted patents
- 207
- Published applications
- 272
- Assignees
- 126
- Inventors
- 417
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 0 |
| 2005 | 1 | 1 |
| 2006 | 3 | 4 |
| 2007 | 1 | 4 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 5 |
| 2011 | 2 | 4 |
| 2012 | 3 | 2 |
| 2013 | 5 | 4 |
| 2014 | 3 | 6 |
| 2015 | 5 | 6 |
| 2016 | 7 | 15 |
| 2017 | 8 | 22 |
| 2018 | 12 | 20 |
| 2019 | 16 | 23 |
| 2020 | 22 | 29 |
| 2021 | 11 | 20 |
| 2022 | 17 | 19 |
| 2023 | 27 | 20 |
| 2024 | 17 | 14 |
| 2025 | 16 | 28 |
| 2026 | 17 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drone29 Sep 2026US 12,747,042 B2
- Systems and methods for payload stabilization25 Aug 2026US 12,715,625 B2
- Helix tilt device for tilting coaxial propulsion system25 Aug 2026US 12,715,626 B2Lockheed Martin Corporation
- Omnidirectional propelled vehicle comprising a chassis and a first rotary shaft11 Aug 2026US 12,703,524 B2Aerix Systems
- Autorotating payload delivery device9 Jun 2026US 12,649,569 B2AeroVironment, Inc.
- Transportation drone1 Oct 2026US 2026/0296691 A1
- Reduced noise rotor for aerial vehicles17 Sep 2026US 2026/0274457 A1Zipline International Inc.
- Hybrid propulsion helicopter including main coaxial counter-rotating rotors and auxiliary tail rotors17 Sep 2026US 2026/0274462 A1
- Coaxial rotor pair assembly with variable collective pitch rotor / propeller for flight vehicle or drone17 Sep 2026US 2026/0274464 A1Toofon, Inc.
- Moving platform for transporting things27 Aug 2026US 2026/0250022 A1Skyworker Technologies Ltd.
Most cited
By later US patents
- Aerodynamically stable, VTOL aircraft112US 7,249,732 B2Ufoz, LLC · 2007
- Tailboom-stabilized VTOL aircraft103US 6,845,939 B12005
- Quiet vertical takeoff and landing aircraft using ducted, magnetic induction air-impeller rotors101US 7,032,861 B22006
- Shroud geometry for unmanned aerial vehicles91US 5,150,857 AUnited Technologies Corporation · 1992
- Aircraft with independently controllable propulsion assemblies89US 10,183,746 B2Bell Helicopter Textron Inc. · 2019