Electric air vehicle
US-2024228020-A1 · Jul 11, 2024 · US
Blade pitch-changing mechanisms
Blade pitch-changing mechanisms · 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 | B64C11/30 |
| Official title | Blade pitch-changing mechanisms |
| Display label | Blade pitch-changing mechanisms |
| Total patents | 363 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 13 |
| 2017 | 26 |
| 2018 | 29 |
| 2019 | 37 |
| 2020 | 49 |
| 2021 | 27 |
| 2022 | 35 |
| 2023 | 36 |
| 2024 | 50 |
| 2025 | 38 |
| 2026 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Convertible propeller
US-2018362155-A1 · Dec 20, 2018 · US
Device for controlling a propeller, having variable-pitch blades, of a turboprop engine
US-2018354608-A1 · Dec 13, 2018 · US
Rotor assemblies and related control systems
US-2018339770-A1 · Nov 29, 2018 · US
Hub assembly and propeller assemblies
US-10137980-B2 · Nov 27, 2018 · US
Fan module with variable pitch blades
US-2018335046-A1 · Nov 22, 2018 · US
Transformable unmanned aerial vehicle
US-2018273170-A1 · Sep 27, 2018 · US
Autothrottle control for turboprop engines
US-2018237125-A1 · Aug 23, 2018 · US
Control member, a rotary wing aircraft, and a method
US-2018148167-A1 · May 31, 2018 · US
Electric control member, a rotary wing aircraft, and a method
US-2018099739-A1 · Apr 12, 2018 · US
Turbo engine with propeller(s) for an aircraft with a system for changing the pitch of the propeller
US-9849970-B2 · Dec 26, 2017 · US
Control device for the pitch of blades, and propeller
US-9816385-B2 · Nov 14, 2017 · US
Aircraft engine assembly comprising a pylon leading edge incorporated with an annular row of unfaired after-guide vanes
US-2017313430-A1 · Nov 2, 2017 · US
Propeller for an aircraft turbo engine, including safety means for controlling blade angle of attack
US-2017313404-A1 · Nov 2, 2017 · US
Quad rotor tail-sitter aircraft with rotor blown wing (rbw) configuration
US-2017297699-A1 · Oct 19, 2017 · US
Variable pitch bladed disc
US-2017284205-A1 · Oct 5, 2017 · US
Aerial vehicle with different propeller blade configurations
US-2017274993-A1 · Sep 28, 2017 · US
Aerial vehicle propulsion mechanism with coaxially aligned propellers
US-2017274979-A1 · Sep 28, 2017 · US
Aerial vehicle propulsion mechanism with coaxially aligned and independently rotatable propellers
US-2017274983-A1 · Sep 28, 2017 · US
Telescoping propeller blades for aerial vehicles
US-2017274982-A1 · Sep 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C11/30?
- CPC B64C11/30 is the Cooperative Patent Classification code for “Blade pitch-changing mechanisms.”
- How many patents are filed under CPC B64C11/30 (Blade pitch-changing mechanisms)?
- Our database includes 363 publications tagged with this CPC code.
- Is patent activity under CPC B64C11/30 growing?
- Publication counts under this code: 50 in 2024 vs 38 in 2025 (latest complete years).