Multirole materials for mission extension
US-2021380283-A1 · Dec 9, 2021 · US
Feeding propellants
Feeding propellants · 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 | F02K9/44 |
| Official title | Feeding propellants |
| Display label | Feeding propellants |
| Total patents | 89 |
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 | 7 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 12 |
| 2019 | 5 |
| 2020 | 11 |
| 2021 | 13 |
| 2022 | 8 |
| 2023 | 9 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rocket propulsion system and method for operating a rocket propulsion system
US-11143144-B2 · Oct 12, 2021 · US
Internal spoke gimbal joint
US-11112040-B2 · Sep 7, 2021 · US
Conduits for transporting fluids and methods of fabricating the same
US-2021270405-A1 · Sep 2, 2021 · US
Pogo effect correction system
US-11105298-B2 · Aug 31, 2021 · US
Microwave flame enhancement of energetic material combustion
US-11041464-B1 · Jun 22, 2021 · US
Conduits for transporting fluids
US-11035515-B2 · Jun 15, 2021 · US
Injection element having an ignition device
US-10989144-B2 · Apr 27, 2021 · US
Pogo effect correction system
US-2021115878-A1 · Apr 22, 2021 · US
Rocket propulsion system and method for operating a rocket propulsion system
US-10968865-B2 · Apr 6, 2021 · US
Rocket propellant mixing and fueling systems and methods
US-10934030-B2 · Mar 2, 2021 · US
Method for suppressing the pogo effect
US-10914268-B2 · Feb 9, 2021 · US
Jet system
US-10883449-B2 · Jan 5, 2021 · US
Reaction control vortex thruster system
US-2020400103-A1 · Dec 24, 2020 · US
Supply system for supplying a rocket engine
US-2020386190-A1 · Dec 10, 2020 · US
Flow control system for a rocket engine with parallel fuel passage network
US-10837406-B2 · Nov 17, 2020 · US
Conduits for transporting fluids and methods of fabricating the same
US-2020200318-A1 · Jun 25, 2020 · US
Propellant injector allowing propellant to be discharged while ensuring uniform injection
US-10655565-B2 · May 19, 2020 · US
Concurrent rocket engine pre-conditioning and tank loading
US-2020108952-A1 · Apr 9, 2020 · US
Methane/oxygen rocket engine with specific impulse enhancement by hot helium infusion
US-10605204-B2 · Mar 31, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K9/44?
- CPC F02K9/44 is the Cooperative Patent Classification code for “Feeding propellants.”
- How many patents are filed under CPC F02K9/44 (Feeding propellants)?
- Our database includes 89 publications tagged with this CPC code.
- Is patent activity under CPC F02K9/44 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).