B64U 20/94
Of rotors or rotor motors
Official title: of rotors or rotor motors
B64U20/94 (Of rotors or rotor motors) appears on 46 US grants and 67 published applications in this corpus.
Search patents in B64U- Granted patents
- 46
- Published applications
- 67
- Assignees
- 32
- Inventors
- 85
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 12 |
| 2018 | 0 | 1 |
| 2019 | 3 | 3 |
| 2020 | 9 | 3 |
| 2021 | 3 | 6 |
| 2022 | 4 | 7 |
| 2023 | 4 | 9 |
| 2024 | 8 | 6 |
| 2025 | 8 | 8 |
| 2026 | 5 | 10 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Stator, and propeller driving apparatus and aircraft using the same28 Apr 2026US 12,614,948 B2Amotech Co., Ltd.
- Industrial aerial robot systems and methods31 Mar 2026US 12,589,896 B2
- Aircraft propulsion system with engine assembly, intercooler, and turbocompressor assembly17 Mar 2026US 12,576,979 B2Pratt & Whitney Canada Corp.
- Apparatus for cooling an electric propulsion engine24 Feb 2026US 12,562,623 B2Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Motor control optimizations for unmanned aerial vehicles17 Feb 2026US 12,552,563 B2Skydio, Inc.
- Motor Control Optimizations For Unmanned Aerial Vehicles10 Sep 2026US 2026/0264898 A1Skydio, Inc.
- Industrial aerial robot systems and methods20 Aug 2026US 2026/0242078 A1
- Industrial aerial robot systems and methods20 Aug 2026US 2026/0242079 A1
- Motor and aircraft13 Aug 2026US 2026/0238087 A1Nidec Corporation
- Propulsion system6 Aug 2026US 2026/0225726 A1Hitachi, Ltd.
Most cited
By later US patents
- Unmanned aerial vehicle with electrically powered, counterrotating ducted rotors47US 7,712,701 B1Lockheed Martin Corporation · 2010
- Multifunctional flying platform15US 10,538,316 B2Zhuhai Yuren Agricultural Aviation Co., Ltd. · 2020
- Propulsor system with integrated passive cooling12US 11,258,333 B2Aurora Flight Sciences Corporation · 2022
- Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft10US 10,293,929 B2Hood Technology Corporation · 2019
- Rotorcraft-assisted system and method for launching and retrieving a fixed-wing aircraft into and from free flight7US 10,696,420 B2Hood Technology Corporation · 2020