Improved nuclear fuel assembly with enhanced seismic performance and control rod worth
US-2025259758-A1 · Aug 14, 2025 · US
Spacer grids
Spacer grids · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G21C3/34 |
| Official title | Spacer grids |
| Display label | Spacer grids |
| Total patents | 49 |
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 | 3 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fission Reactor with Segmented Cladding Bodies Having Cladding Arms with Involute Curve Shape
US-2025022622-A1 · Jan 16, 2025 · US
Fission reactor with segmented cladding bodies having cladding arms with involute curve shape
US-12136497-B2 · Nov 5, 2024 · US
Method and assembling system for inserting at least one nuclear fuel rod into spacer grids of a nuclear fuel assembly
US-12080437-B2 · Sep 3, 2024 · US
Spacer grid using tubular cells
US-11942230-B2 · Mar 26, 2024 · US
Fuel assembly
US-11728046-B2 · Aug 15, 2023 · US
Apparatus for fatigue testing bulge tool having WH-type skeleton
US-11719609-B2 · Aug 8, 2023 · US
Three dimensional printed precision magnets for fuel assembly
US-2023230713-A1 · Jul 20, 2023 · US
Three dimensional printed precision magnets for fuel assembly
US-2023122593-A1 · Apr 20, 2023 · US
Nuclear reactor component having a coating of amorphous chromium carbide
US-11545273-B2 · Jan 3, 2023 · US
Three dimensional printed precision magnets for fuel assembly
US-11437155-B2 · Sep 6, 2022 · US
Nuclear fuel assembly support feature
US-11404176-B2 · Aug 2, 2022 · US
Fission reactor with segmented cladding bodies having cladding arms with involute curve shape
US-2022139576-A1 · May 5, 2022 · US
Method of installing an external dashpot tube around a control rod guide tube in a nuclear fuel assembly
US-11289211-B2 · Mar 29, 2022 · US
Fission reactor with segmented cladding bodies having cladding arms with involute curve shape
US-11289212-B2 · Mar 29, 2022 · US
Method and assembling system for inserting at least one nuclear fuel rod into spacer grids of a nuclear fuel assembly
US-2022059245-A1 · Feb 24, 2022 · US
Fission reactor with segmented cladding bodies having cladding arms with involute curve shape
US-2021202122-A1 · Jul 1, 2021 · US
Spacer Grid Of Nuclear Fuel Assembly Having Simple Shape Structure
US-2021110941-A1 · Apr 15, 2021 · US
Spacer grid using tubular cells with mixing vanes
US-2021098140-A1 · Apr 1, 2021 · US
Apparatus for fatigue testing bulge tool having wh-type skeleton
US-2021088431-A1 · Mar 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G21C3/34?
- CPC G21C3/34 is the Cooperative Patent Classification code for “Spacer grids.”
- How many patents are filed under CPC G21C3/34 (Spacer grids)?
- Our database includes 49 publications tagged with this CPC code.
- Is patent activity under CPC G21C3/34 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).