Nuclear reactor assemblies, nuclear reactor target assemblies, and nuclear reactor methods
US-12531168-B2 · Jan 20, 2026 · US
Solid reactor fuel {Pellets made of fissile material}
Solid reactor fuel {Pellets made of fissile material} · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G21C3/58 |
| Official title | Solid reactor fuel {Pellets made of fissile material} |
| Display label | Solid reactor fuel {Pellets made of fissile material} |
| Total patents | 53 |
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 | 5 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 9 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Using additive manufacturing in creating a nuclear fuel structure with a shape corresponding to a mathematically-based periodic solid having a triply periodic minimal surface
US-12437891-B2 · Oct 7, 2025 · US
Suspended uranium dioxide fuel
US-2025014768-A1 · Jan 9, 2025 · US
Plate-shaped nuclear fuel element and method of manufacturing the same
US-2024404714-A1 · Dec 5, 2024 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-12159726-B2 · Dec 3, 2024 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-12159727-B2 · Dec 3, 2024 · US
Coated fuel pellets, methods of making and using same
US-12154698-B2 · Nov 26, 2024 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-2024266077-A1 · Aug 8, 2024 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-2024038406-A1 · Feb 1, 2024 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-2024038405-A1 · Feb 1, 2024 · US
Nuclear reactor irradiation systems and methods
US-11842823-B2 · Dec 12, 2023 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion
US-11817225-B2 · Nov 14, 2023 · US
Aqueous additive production method for the fabrication of metallic bodies
US-11742096-B2 · Aug 29, 2023 · US
Fuel assembly
US-11728046-B2 · Aug 15, 2023 · US
Grain boundary enhanced UN and U3Si2 pellets with improved oxidation resistance
US-11551822-B2 · Jan 10, 2023 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-2022351870-A1 · Nov 3, 2022 · US
Nuclear fuel sintered pellet having excellent impact resistance
US-2022310277-A1 · Sep 29, 2022 · US
Nuclear Reactor Assemblies, Nuclear Reactor Target Assemblies, and Nuclear Reactor Methods
US-2022277865-A1 · Sep 1, 2022 · US
Functionally graded lattice cermet fuel structure with shape corresponding to a mathematically-based periodic solid, particularly for nuclear thermal propulsion applications
US-11424041-B2 · Aug 23, 2022 · US
Reactor fuel pellets with thermally-conductive inserts, and related reactor fuel pellet arrangements
US-11404177-B2 · Aug 2, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G21C3/58?
- CPC G21C3/58 is the Cooperative Patent Classification code for “Solid reactor fuel {Pellets made of fissile material}.”
- How many patents are filed under CPC G21C3/58 (Solid reactor fuel {Pellets made of fissile material})?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC G21C3/58 growing?
- Publication counts under this code: 7 in 2024 vs 2 in 2025 (latest complete years).