Valve timing system for liquid fuel rockets
US-2022389885-A1 · Dec 8, 2022 · US
by electrical means, e.g. relays or switches
by electrical means, e.g. relays or switches · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F05D2270/52 |
| Official title | by electrical means, e.g. relays or switches |
| Display label | by electrical means, e.g. relays or switches |
| Total patents | 89 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 8 |
| 2021 | 9 |
| 2022 | 15 |
| 2023 | 11 |
| 2024 | 4 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric power dissipater for electrically-actuated turbocharger
US-11512626-B2 · Nov 29, 2022 · US
Method to condition and control supercritical liquefied petroleum gases fuel flow for operation in gas turbines
US-11506127-B2 · Nov 22, 2022 · US
Tertiary lock
US-11441514-B2 · Sep 13, 2022 · US
Turbine engine comprising a rotor supporting variable-pitch blades
US-11396821-B2 · Jul 26, 2022 · US
Gear and electric amplification of generator motor compressor and turbine drives
US-11319882-B2 · May 3, 2022 · US
Method to condition and control supercritical liquefied petroleum gases fuel flow for operation in gas turbines
US-2022025817-A1 · Jan 27, 2022 · US
Stator Blade Heating System, Steam Turbine Having Stator Blade Heating System, Stator Blade Segment, and Stator Blade Heating Method
US-2022018263-A1 · Jan 20, 2022 · US
Turbine engine comprising a rotor supporting variable-pitch blades
US-2022003123-A1 · Jan 6, 2022 · US
System for confirming shutdown of an aircraft engine
US-2021404393-A1 · Dec 30, 2021 · US
Turbine engine comprising a rotor with variable-pitch blades
US-2021381388-A1 · Dec 9, 2021 · US
Electric power dissipater for electrically-actuated turbocharger
US-2021348549-A1 · Nov 11, 2021 · US
Single lever control system for engines with multiple control modes
US-11124309-B2 · Sep 21, 2021 · US
Power converting apparatus and air conditioner
US-2021143727-A1 · May 13, 2021 · US
System and method for engine operation in a multi-engine aircraft
US-2021140374-A1 · May 13, 2021 · US
Motor device, controller, motor system, fan unit, and communication method
US-2021140441-A1 · May 13, 2021 · US
Turbofan gas turbine engine shaft break detection system and method
US-10989063-B2 · Apr 27, 2021 · US
Gear and electric amplification of generator motor compressor and turbine drives
US-2021071585-A1 · Mar 11, 2021 · US
Fuel supply control device
US-2020400074-A1 · Dec 24, 2020 · US
Low-power bowed rotor prevention and monitoring system
US-10787933-B2 · Sep 29, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F05D2270/52?
- CPC F05D2270/52 is the Cooperative Patent Classification code for “by electrical means, e.g. relays or switches.”
- How many patents are filed under CPC F05D2270/52 (by electrical means, e.g. relays or switches)?
- Our database includes 89 publications tagged with this CPC code.
- Is patent activity under CPC F05D2270/52 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).