Valve timing system for liquid fuel rockets
US-2022389885-A1 · Dec 8, 2022 · US
Propellant feed valves
Propellant feed valves · 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 | F02K9/58 |
| Official title | Propellant feed valves |
| Display label | Propellant feed valves |
| Total patents | 87 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 11 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 11 |
| 2021 | 5 |
| 2022 | 13 |
| 2023 | 5 |
| 2024 | 8 |
| 2025 | 7 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Active on orbit fluid propellant management and refueling systems and methods
US-2022355954-A1 · Nov 10, 2022 · US
Regulating valve with integrated purge function
US-11396956-B2 · Jul 26, 2022 · US
Electrically-actuated valve and regulator for electrospray thrusters
US-2022195964-A1 · Jun 23, 2022 · US
Flow rate control device with compliant structure
US-2022163982-A1 · May 26, 2022 · US
Vortex thruster system including catalyst bed with screen assembly
US-2022120240-A1 · Apr 21, 2022 · US
Pneumatic circuit breaker based self resetting passive overspeed control valve for turbine pump assembly
US-11286887-B2 · Mar 29, 2022 · US
Distributed fuel modules with hydraulic flow circuit breakers and gaseous flow circuit breakers
US-11286886-B2 · Mar 29, 2022 · US
Dual stage catalytic thruster
US-11236703-B2 · Feb 1, 2022 · US
Dual redundant two-stage valve
US-11215067-B2 · Jan 4, 2022 · US
Regulated flow divider valves
US-2021301766-A1 · Sep 30, 2021 · US
Method for operating a rocket propulsion system and rocket propulsion system
US-11053892-B2 · Jul 6, 2021 · US
Regulating valve with integrated purge function
US-2021116043-A1 · Apr 22, 2021 · US
Rocket propulsion system and method for operating a rocket propulsion system
US-10968865-B2 · Apr 6, 2021 · US
Jet system
US-10883449-B2 · Jan 5, 2021 · US
Reaction control vortex thruster system
US-2020400103-A1 · Dec 24, 2020 · US
Flow control system for a rocket engine with parallel fuel passage network
US-10837406-B2 · Nov 17, 2020 · US
Distributed fuel modules with hydraulic flow circuit breakers and gaseous flow circuit breakers
US-2020326730-A1 · Oct 15, 2020 · US
Dual redundant two-stage valve
US-2020271138-A1 · Aug 27, 2020 · US
Solenoid-controlled, liquid cryogenic-hydraulically actuated isolation valve assembly
US-10746132-B2 · Aug 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K9/58?
- CPC F02K9/58 is the Cooperative Patent Classification code for “Propellant feed valves.”
- How many patents are filed under CPC F02K9/58 (Propellant feed valves)?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC F02K9/58 growing?
- Publication counts under this code: 8 in 2024 vs 7 in 2025 (latest complete years).