B64U 20/20
Constructional aspects of uavs: for noise reduction
Official title: for noise reduction
B64U20/20 (Constructional aspects of uavs: for noise reduction) appears on 80 US grants and 100 published applications in this corpus.
Search patents in B64U- Granted patents
- 80
- Published applications
- 100
- Assignees
- 45
- Inventors
- 166
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 3 | 0 |
| 2017 | 6 | 17 |
| 2018 | 11 | 11 |
| 2019 | 12 | 8 |
| 2020 | 6 | 11 |
| 2021 | 12 | 12 |
| 2022 | 7 | 9 |
| 2023 | 8 | 5 |
| 2024 | 5 | 8 |
| 2025 | 4 | 9 |
| 2026 | 4 | 5 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Rotor craft noise cancellation system and method18 Aug 2026US 12,711,937 B2
- Configuration for vertical take-off and landing system for aerial vehicles4 Aug 2026US 12,698,080 B2Jetoptera, Inc.
- Reduced noise rotor for aerial vehicles9 Jun 2026US 12,649,591 B2Zipline International Inc.
- Airfoil profile for an aircraft and aerodynamic surfaces using said airfoil profile27 Jan 2026US 12,534,233 B2Airbus Operations GmbH
- Flying body, controller, control program, and control method29 Apr 2025US 12,286,251 B2Kabushiki Kaisha Toshiba
- Reduced noise rotor for aerial vehicles17 Sep 2026US 2026/0274457 A1Zipline International Inc.
- Autonomous delivery vehicle and system27 Aug 2026US 2026/0249993 A1Zipline International Inc.
- Low-noise thrust generation apparatus and unmanned aerial vehicle comprising same30 Jul 2026US 2026/0217391 A1Korea Advanced Institute of Science and Technology
- Aerial vehicle and method for emergency landing thereof2 Apr 2026US 2026/0091892 A1
- Unmanned aerial vehicle with optimized rotor geometry, asymmetri arm configuration, and integrated structural members26 Mar 2026US 2026/0084846 A1
Most cited
By later US patents
- Unmanned aerial vehicle motor driving randomization and feedback for noise abatement102US 9,415,870 B1Amazon Technologies, Inc. · 2016
- Active airborne noise abatement82US 9,442,496 B1Amazon Technologies, Inc. · 2016
- Real-time noise reduction system for dynamic motor frequencies aboard an unmanned aerial vehicle (UAV)69US 9,489,937 B1Trace Live Network Inc. · 2016
- Active airborne noise abatement44US 10,468,008 B2Amazon Technologies, Inc. · 2019
- Drone with ring assembly33US 10,099,785 B12018