Hydraulic valve
US-2025214697-A1 · Jul 3, 2025 · US
overriding of personal controls; with automatic return to inoperative position
overriding of personal controls; with automatic return to inoperative position · 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 | B64C13/44 |
| Official title | overriding of personal controls; with automatic return to inoperative position |
| Display label | overriding of personal controls; with automatic return to inoperative position |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2017 | 6 |
| 2018 | 5 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spoiler droop function with mechanical feedback driving hydraulic valve
US-11312475-B2 · Apr 26, 2022 · US
Actuator control arrangement
US-11204045-B2 · Dec 21, 2021 · US
Methods and apparatus for mitigating aerodynamic flutter of aircraft wing flaps
US-11142301-B2 · Oct 12, 2021 · US
Methods and apparatus for mitigating aerodynamic flutter of aircraft wing flaps
US-2021061446-A1 · Mar 4, 2021 · US
Actuator control valve arrangement
US-10933979-B2 · Mar 2, 2021 · US
Actuator control arrangement
US-2021018020-A1 · Jan 21, 2021 · US
Spoiler droop function with mechanical feedback driving hydraulic valve
US-2020391846-A1 · Dec 17, 2020 · US
Integrated stability and control augmentation system
US-10836469-B2 · Nov 17, 2020 · US
Aircraft control comprising a pedal coupled to a cylinder and associated control device
US-10822073-B2 · Nov 3, 2020 · US
Actuator control valve arrangement
US-2020255125-A1 · Aug 13, 2020 · US
Hydrostatic automatic flight servo systems
US-10118689-B2 · Nov 6, 2018 · US
Pilot assistance system
US-10059439-B2 · Aug 28, 2018 · US
Stability and control augmentation system
US-10037040-B2 · Jul 31, 2018 · US
Actuator system for aircraft control surface
US-10029782-B2 · Jul 24, 2018 · US
Integrated stability and control augmentation system
US-2018172178-A1 · Jun 21, 2018 · US
Aircraft control comprising a pedal coupled to a cylinder and associated control device
US-2017166297-A1 · Jun 15, 2017 · US
Electric actuator with a manual drive means
US-9660501-B2 · May 23, 2017 · US
Systems and methods for operating flight control surfaces
US-9604717-B2 · Mar 28, 2017 · US
Actuator system for aircraft control surface
US-2017057620-A1 · Mar 2, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C13/44?
- CPC B64C13/44 is the Cooperative Patent Classification code for “overriding of personal controls; with automatic return to inoperative position.”
- How many patents are filed under CPC B64C13/44 (overriding of personal controls; with automatic return to inoperative position)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC B64C13/44 growing?
- Publication counts under this code: 1 in 2022 vs 1 in 2025 (latest complete years).