Tiltrotor Aircraft having Rotatable Wing Extensions
US-2018057159-A1 · Mar 1, 2018 · US
Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft · 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 | B64C11/00 |
| Official title | Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft |
| Display label | Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft |
| Total patents | 332 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 16 |
| 2017 | 32 |
| 2018 | 29 |
| 2019 | 29 |
| 2020 | 36 |
| 2021 | 42 |
| 2022 | 33 |
| 2023 | 36 |
| 2024 | 35 |
| 2025 | 28 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hybrid aircraft with tranversely oriented engine
US-2018037332-A1 · Feb 8, 2018 · US
Intentionally imbalancing propellers for performance and noise-shaping
US-2017334546-A1 · Nov 23, 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
Blade structure health monitoring system
US-2017315020-A1 · Nov 2, 2017 · US
Rotorcraft configuration and method of rotorcraft design
US-2017297697-A1 · Oct 19, 2017 · US
Aerial vehicle adaptable propeller blades
US-2017274978-A1 · Sep 28, 2017 · US
Thrust scheduling method for variable pitch fan engines and turbo-shaft, turbo-propeller engines
US-9771878-B2 · Sep 26, 2017 · US
Dual-aircraft system
US-2017259918-A1 · Sep 14, 2017 · US
System and method for coordinating a propeller with an electronic engine control
US-2017248085-A1 · Aug 31, 2017 · US
Selecting propellers for performance and noise shaping
US-9745050-B2 · Aug 29, 2017 · US
Driving device, propeller and propulsion system
US-2017240267-A1 · Aug 24, 2017 · US
Lock mechanism, propeller having a lock mechanism, and aerial vehicle
US-2017233063-A1 · Aug 17, 2017 · US
Propeller and aerial vehicle, containing locking device
US-2017233062-A1 · Aug 17, 2017 · US
Method and system for open rotor engine fuselage protection
US-9725155-B2 · Aug 8, 2017 · US
Resonant blades using an aperture for cancellation of propeller generated noise
US-9701394-B2 · Jul 11, 2017 · US
Method and system for open rotor engine fuselage protection
US-2017190409-A1 · Jul 6, 2017 · US
Variable-pitch fan with low pitch of a turbine engine
US-2017191495-A1 · Jul 6, 2017 · US
Carbon nanotube transducers on propeller blades for sound control
US-2017178618-A1 · Jun 22, 2017 · US
Selecting propellers for performance and noise shaping
US-2017174317-A1 · Jun 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C11/00?
- CPC B64C11/00 is the Cooperative Patent Classification code for “Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft.”
- How many patents are filed under CPC B64C11/00 (Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft)?
- Our database includes 332 publications tagged with this CPC code.
- Is patent activity under CPC B64C11/00 growing?
- Publication counts under this code: 35 in 2024 vs 28 in 2025 (latest complete years).