Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine
US-12351344-B2 · Jul 8, 2025 · US
Nuclear spacecraft propulsion
Nuclear spacecraft propulsion · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64G1/408 |
| Official title | {Nuclear spacecraft propulsion} |
| Display label | Nuclear spacecraft propulsion |
| Total patents | 40 |
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 | 4 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 6 |
| 2023 | 8 |
| 2024 | 4 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Mandrel-wound, eccentric monolithic fuel assembly core, fuel assembly and reactor incorporating same, and methods of manufacture
US-2025218611-A1 · Jul 3, 2025 · US
Carbide-based fuel assembly for thermal propulsion applications
US-12249435-B2 · Mar 11, 2025 · US
Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine
US-2025066045-A1 · Feb 27, 2025 · US
Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine
US-12234042-B2 · Feb 25, 2025 · US
NTAC augmented nuclear electric propulsion and/or nuclear thermal propulsion
US-12122539-B2 · Oct 22, 2024 · US
Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine
US-2024278938-A1 · Aug 22, 2024 · US
Robust nuclear propulsion fission reactor with tri-pitch patterned core and drum absorbers
US-11990248-B2 · May 21, 2024 · US
Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine
US-11975870-B2 · May 7, 2024 · US
Nuclear thermal propulsion system with reactor direct drive of cryocooler turbine
US-2023415926-A1 · Dec 28, 2023 · US
Carbide-based fuel assembly for thermal propulsion applications
US-2023326618-A1 · Oct 12, 2023 · US
Carbide-based fuel assembly for thermal propulsion applications
US-2023317305-A1 · Oct 5, 2023 · US
Fuel bundle with twisted ribbon fuel rodlets for nuclear thermal propulsion applications, structures for manufacture, and methods of manufacture
US-2023282374-A1 · Sep 7, 2023 · US
Fuel bundle with twisted ribbon fuel rodlets for nuclear thermal propulsion applications, structures for manufacture, and methods of manufacture
US-2023282373-A1 · Sep 7, 2023 · US
Fuel bundle with twisted ribbon fuel rodlets for nuclear thermal propulsion applications, structures for manufacture, and methods of manufacture
US-2023282380-A1 · Sep 7, 2023 · US
Carbide-based fuel assembly for thermal propulsion applications
US-11728044-B2 · Aug 15, 2023 · US
Carbide-based fuel assembly for thermal propulsion applications
US-11710578-B2 · Jul 25, 2023 · US
Space reactor gas assist control rod release mechanism
US-11469004-B2 · Oct 11, 2022 · US
NTAC Augmented Nuclear Electric Propulsion and/or Nuclear Thermal Propulsion
US-2022267031-A1 · Aug 25, 2022 · US
Control drum system for use with nuclear reactors
US-11380449-B2 · Jul 5, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64G1/408?
- CPC B64G1/408 is the Cooperative Patent Classification code for “Nuclear spacecraft propulsion.”
- How many patents are filed under CPC B64G1/408 (Nuclear spacecraft propulsion)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC B64G1/408 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).