Wind-powered recharging for a weight-shifting coaxial helicopter
US-10502188-B2 · Dec 10, 2019 · US
Coaxial rotors
Coaxial rotors · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64U30/24 |
| Official title | Coaxial rotors |
| Display label | Coaxial rotors |
| Total patents | 166 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 21 |
| 2018 | 11 |
| 2019 | 23 |
| 2020 | 29 |
| 2021 | 11 |
| 2022 | 18 |
| 2023 | 12 |
| 2024 | 8 |
| 2025 | 22 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Collapsible flying device
US-2019367164-A1 · Dec 5, 2019 · US
Deployable propeller blades for aerial vehicles
US-10494088-B1 · Dec 3, 2019 · US
Coaxially aligned propellers of an aerial vehicle
US-2019337608-A1 · Nov 7, 2019 · US
UAV rotor system
US-10435149-B2 · Oct 8, 2019 · US
Aerial vehicle propulsion mechanism with coaxially aligned and independently rotatable propellers
US-10399666-B2 · Sep 3, 2019 · US
Detachable power transfer device for a rotary-wing aircraft
US-10392103-B2 · Aug 27, 2019 · US
Weight-shifting coaxial helicopter
US-10370089-B2 · Aug 6, 2019 · US
Unmanned aerial vehicle propeller assembly
US-2019210719-A1 · Jul 11, 2019 · US
Single-shaft aerial vehicle
US-10336434-B2 · Jul 2, 2019 · US
Redundant Aircraft Propulsion System Using Co-rotating Propellers Joined By Tip Connectors
US-2019161168-A1 · May 30, 2019 · US
Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft
US-10293929-B2 · May 21, 2019 · US
Unmanned aerial vehicle protective frame configuration
US-10293937-B2 · May 21, 2019 · US
Coaxial twin-propeller twin-motor aerial vehicle
US-10259573-B2 · Apr 16, 2019 · US
Aircraft system and method for vertical takeoff and landing
US-10246185-B2 · Apr 2, 2019 · US
Redundant aircraft propulsion system using co-rotating propellers joined by tip connectors
US-10232933-B2 · Mar 19, 2019 · US
Hydraulic multi-rotor aerial vehicle
US-2019071172-A1 · Mar 7, 2019 · US
Foldable Wings for UAS having a Geared Interface
US-2019031316-A1 · Jan 31, 2019 · US
Aircraft with independently controllable propulsion assemblies
US-10183746-B2 · Jan 22, 2019 · US
Aircraft
US-2019009876-A1 · Jan 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64U30/24?
- CPC B64U30/24 is the Cooperative Patent Classification code for “Coaxial rotors.”
- How many patents are filed under CPC B64U30/24 (Coaxial rotors)?
- Our database includes 166 publications tagged with this CPC code.
- Is patent activity under CPC B64U30/24 growing?
- Publication counts under this code: 8 in 2024 vs 22 in 2025 (latest complete years).