2-stage cold gas thruster
US-12454371-B2 · Oct 28, 2025 · US
servo-mechanisms or control devices therefor
servo-mechanisms or control devices therefor · 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 | F02K9/805 |
| Official title | {servo-mechanisms or control devices therefor} |
| Display label | servo-mechanisms or control devices therefor |
| Total patents | 43 |
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 | 1 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 8 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid rocket engine injector with variable flow area
US-2025297585-A1 · Sep 25, 2025 · US
Liquid rocket engine injector with variable flow area
US-12366218-B2 · Jul 22, 2025 · US
Liquid rocket engine injector with variable flow area
US-2024318616-A1 · Sep 26, 2024 · US
Valve timing system for liquid fuel rockets
US-12031506-B2 · Jul 9, 2024 · US
Liquid rocket engine injector with variable flow area
US-12031505-B2 · Jul 9, 2024 · US
2-stage cold gas thruster
US-2024067365-A1 · Feb 29, 2024 · US
Liquid rocket engine injector with variable flow area
US-2023304457-A1 · Sep 28, 2023 · US
Steering system with power take-off from actuators
US-11733011-B2 · Aug 22, 2023 · US
Liquid rocket engine injector with variable flow area
US-11643995-B1 · May 9, 2023 · US
Valve timing system for liquid fuel rockets
US-2022389885-A1 · Dec 8, 2022 · US
Turbine pump assembly with turbine exhaust cooled heat exchanger for active hydraulic oil
US-11401892-B2 · Aug 2, 2022 · US
Steering system with power take-off from actuators
US-2022163302-A1 · May 26, 2022 · US
Pneumatic circuit breaker based self resetting passive overspeed control valve for turbine pump assembly
US-11286887-B2 · Mar 29, 2022 · US
Turbine pump assembly with turbine exhaust cooled heat exchanger for active hydraulic oil
US-2022025903-A1 · Jan 27, 2022 · US
Flow control system for a rocket engine with parallel fuel passage network
US-10837406-B2 · Nov 17, 2020 · US
Thrust control apparatus of propulsion system
US-10823116-B2 · Nov 3, 2020 · US
Deflector for a thrust flow powered vehicle and thrust flow powered vehicle with said deflector
US-10774785-B2 · Sep 15, 2020 · US
Thrust control apparatus having inner and outer pintle nozzles controlled by common gear
US-10738740-B1 · Aug 11, 2020 · US
Device for modulating a gas ejection section
US-10690090-B2 · Jun 23, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K9/805?
- CPC F02K9/805 is the Cooperative Patent Classification code for “servo-mechanisms or control devices therefor.”
- How many patents are filed under CPC F02K9/805 (servo-mechanisms or control devices therefor)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC F02K9/805 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).