Superconducting material and method of preparation thereof
US-12577122-B2 · Mar 17, 2026 · US
containing rare earth oxides
containing rare earth oxides · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B35/4504 |
| Official title | {containing rare earth oxides} |
| Display label | containing rare earth oxides |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 9 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oxygen sensor element and method for manufacturing same
US-12571752-B2 · Mar 10, 2026 · US
Method for recycling rare-earth barium copper oxide (rebco) seed crystals to grow superconducting bulk
US-2025347030-A1 · Nov 13, 2025 · US
High temperature superconducting materials
US-12433174-B2 · Sep 30, 2025 · US
Superconducting wire material, superconducting coil, superconducting magnet, superconducting motor, superconducting generator, superconducting aircraft, and superconducting device
US-12394541-B2 · Aug 19, 2025 · US
Methods of fabricating oxide/metal composites and components produced thereby
US-12365631-B2 · Jul 22, 2025 · US
Oxide superconductor and method for manufacturing same
US-2025057056-A1 · Feb 13, 2025 · US
Method for making superconducting coil for magnetic resonance imaging
US-12172931-B2 · Dec 24, 2024 · US
High temperature superconducting materials
US-2024415031-A1 · Dec 12, 2024 · US
Oxide superconductor and method for manufacturing same
US-12156483-B2 · Nov 26, 2024 · US
Superconducting wire material, superconducting coil, superconducting magnet, superconducting motor, superconducting generator, superconducting aircraft, and superconducting device
US-2024321485-A1 · Sep 26, 2024 · US
Oxygen sensor element and method for manufacturing same
US-2024272107-A1 · Aug 15, 2024 · US
High temperature superconducting materials
US-12022748-B2 · Jun 25, 2024 · US
Method for making superconducting coil for magnetic resonance imaging
US-2024092698-A1 · Mar 21, 2024 · US
Superconducting material and method of preparation thereof
US-2024043280-A1 · Feb 8, 2024 · US
Method for making a superconducting YBCO wire or tape
US-11858853-B2 · Jan 2, 2024 · US
High temperature superconducting materials
US-2023397508-A1 · Dec 7, 2023 · US
Method for making a superconducting ybco wire or tape
US-2023373865-A1 · Nov 23, 2023 · US
Method for making YBCO superconductor
US-11767267-B2 · Sep 26, 2023 · US
Method for making ybco superconductor
US-2023212080-A1 · Jul 6, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B35/4504?
- CPC C04B35/4504 is the Cooperative Patent Classification code for “containing rare earth oxides.”
- How many patents are filed under CPC C04B35/4504 (containing rare earth oxides)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC C04B35/4504 growing?
- Publication counts under this code: 9 in 2024 vs 5 in 2025 (latest complete years).