Rocket motor including an embedded charge assembly (ECA) configured to support a burn rate enhancement (BRE) wire
US-12454929-B1 · Oct 28, 2025 · US
having two or more propellant charges with the propulsion gases exhausting through a common nozzle
having two or more propellant charges with the propulsion gases exhausting through a common nozzle · 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 | F02K9/28 |
| Official title | having two or more propellant charges with the propulsion gases exhausting through a common nozzle |
| Display label | having two or more propellant charges with the propulsion gases exhausting through a common nozzle |
| Total patents | 42 |
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 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 2 |
| 2020 | 8 |
| 2021 | 3 |
| 2022 | 8 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Multipulse rocket motor with pressure-equalizing channels
US-2024167435-A1 · May 23, 2024 · US
Multi-pulse propulsion system with passive initiation
US-11988173-B2 · May 21, 2024 · US
Multi-stage propellant systems, assemblies, and methods
US-11884408-B2 · Jan 30, 2024 · US
System for multiple burns from a rocket motor
US-11859579-B1 · Jan 2, 2024 · US
Rocket motor with embedded burnable cutting explosive energetic material
US-11732676-B1 · Aug 22, 2023 · US
Multi-stage propellant systems, assemblies, and methods
US-2023166851-A1 · Jun 1, 2023 · US
Variable burn-rate solid rocket motor ignition method
US-11530669-B2 · Dec 20, 2022 · US
Multi-pulse solid rocket motor ignition method
US-11512668-B2 · Nov 29, 2022 · US
Multi-pulse rocket motor with flight termination destruct charge
US-11499505-B2 · Nov 15, 2022 · US
Multi-pulse gas generator device and igniter with varied flow rates
US-11415081-B2 · Aug 16, 2022 · US
Multi-pulse solid rocket motor ignition method
US-2022170432-A1 · Jun 2, 2022 · US
2-pulse gas generator and method of measuring propellant combustion surface position
US-11326557-B2 · May 10, 2022 · US
Multi-pulse propulsion system with passive initiation
US-2022120241-A1 · Apr 21, 2022 · US
Variable burn-rate solid rocket motor ignition method
US-2022082066-A1 · Mar 17, 2022 · US
Multi-pulse rocket motor
US-2021381468-A1 · Dec 9, 2021 · US
Multi-pulse gas generator device
US-2021293205-A1 · Sep 23, 2021 · US
Integral variable performance propellant grain
US-10982625-B2 · Apr 20, 2021 · US
Reaction control vortex thruster system
US-2020400103-A1 · Dec 24, 2020 · US
Generation of a Pulsed Jet by Jet Vectoring Through a Nozzle with Multiple Outlets
US-2020284219-A1 · Sep 10, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K9/28?
- CPC F02K9/28 is the Cooperative Patent Classification code for “having two or more propellant charges with the propulsion gases exhausting through a common nozzle.”
- How many patents are filed under CPC F02K9/28 (having two or more propellant charges with the propulsion gases exhausting through a common nozzle)?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC F02K9/28 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).