Gas turbine engine having a heat exchanger arrangement for heating or cooling a fuel
US-12516631-B2 · Jan 6, 2026 · US
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with an air-breathing jet-propulsion plant (with a ram-jet engine F02K7/18)
with an air-breathing jet-propulsion plant (with a ram-jet engine F02K7/18) · 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 | F02K9/78 |
| Official title | with an air-breathing jet-propulsion plant (with a ram-jet engine F02K7/18) |
| Display label | with an air-breathing jet-propulsion plant (with a ram-jet engine F02K7/18) |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydrogen liquid oxygen combined cycle engine
US-2025271142-A1 · Aug 28, 2025 · US
Hydrogen liquid oxygen combined cycle engine
US-12259134-B2 · Mar 25, 2025 · US
System and method for conditioning fuel for an air-breathing hydrogen engine
US-2025084791-A1 · Mar 13, 2025 · US
Hydrogen liquid oxygen combined cycle engine
US-2025003591-A1 · Jan 2, 2025 · US
Launch system and method
US-2024199237-A1 · Jun 20, 2024 · US
Propulsion system with single initiator for multiple rocket motors
US-11852104-B2 · Dec 26, 2023 · US
Propulsion system with single initiator for multiple rocket motors
US-2023073547-A1 · Mar 9, 2023 · US
Air intake cover
US-11506123-B2 · Nov 22, 2022 · US
Rocket braked by air recovered by turbines and deceleration method for recovery of same
US-2021190013-A1 · Jun 24, 2021 · US
Combustor, jet engine, flying body, and operation method of jet engine
US-10697397-B2 · Jun 30, 2020 · US
Air intake cover
US-2020141318-A1 · May 7, 2020 · US
Spacecraft nozzle comprising an improved deployment system
US-10578056-B2 · Mar 3, 2020 · US
Cryogenic circuit conditioning system
US-10480455-B2 · Nov 19, 2019 · US
Combustor, jet engine, flying body, and operation method of jet engine
US-2017030297-A1 · Feb 2, 2017 · US
Starter device for rocket motor turbopump
US-2015354452-A1 · Dec 10, 2015 · US
Cryogenic circuit conditioning system
US-2015345428-A1 · Dec 3, 2015 · US
Propulsion system for flying machine, particularly for a missile
US-9169806-B2 · Oct 27, 2015 · US