Methods of recovering an elemental rare earth metal, methods of forming a rare earth metal, and related systems
US-2021292870-A1 · Sep 23, 2021 · US
of metals not provided for in groups C25C1/02 - C25C1/20
of metals not provided for in groups C25C1/02 - C25C1/20 · 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 | C25C1/22 |
| Official title | of metals not provided for in groups C25C1/02 - C25C1/20 |
| Display label | of metals not provided for in groups C25C1/02 - C25C1/20 |
| Total patents | 85 |
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 | 11 |
| 2016 | 10 |
| 2017 | 11 |
| 2018 | 9 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 7 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for refining bismuth
US-2021292927-A1 · Sep 23, 2021 · US
Reactor systems for recovering metals, and related methods
US-11035023-B2 · Jun 15, 2021 · US
Electrochemical deposition for metal ion extraction/removal from water
US-10981793-B2 · Apr 20, 2021 · US
Polyoxometalate derivatized metal oxide electrodes
US-2021108319-A1 · Apr 15, 2021 · US
METAL AND TIN ALLOY HAVING LOW alpha-RAY EMISSION, AND METHOD FOR PRODUCING SAME
US-2020385843-A1 · Dec 10, 2020 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-10793958-B2 · Oct 6, 2020 · US
Method of producing low alpha-ray emitting bismuth, and low alpha-ray emitting bismuth
US-10711358-B2 · Jul 14, 2020 · US
Simple chemical method for the separation of rare earth metals
US-10704122-B2 · Jul 7, 2020 · US
Systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions
US-10683579-B2 · Jun 16, 2020 · US
Systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions
US-2020024762-A1 · Jan 23, 2020 · US
Reactor systems for recovering metals, and related methods
US-2019352742-A1 · Nov 21, 2019 · US
Sea water lithium-recovery device and lithium-recovery station using coastal-water-based lithium-adsorption equipment and shore-based lithium-isolation equipment, and lithium desorption device using aeration
US-10385423-B2 · Aug 20, 2019 · US
Methods for recovering metals from electronic waste, and related systems
US-10378081-B2 · Aug 13, 2019 · US
Systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions
US-10329679-B2 · Jun 25, 2019 · US
Valuable metal selectively adsorbing electrode and method for selectively recovering valuable metals
US-10323331-B2 · Jun 18, 2019 · US
Electrochemical Deposition for Metal Ion Extraction/Removal from Water
US-2019135638-A1 · May 9, 2019 · US
Method for treating waste liquid from process of etching indium tin oxide
US-10202703-B2 · Feb 12, 2019 · US
Systems and methods for producing metal clusters; functionalized surfaces; and droplets including solvated metal ions
US-2019024250-A1 · Jan 24, 2019 · US
Rotary seal
US-2018347632-A1 · Dec 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25C1/22?
- CPC C25C1/22 is the Cooperative Patent Classification code for “of metals not provided for in groups C25C1/02 - C25C1/20.”
- How many patents are filed under CPC C25C1/22 (of metals not provided for in groups C25C1/02 - C25C1/20)?
- Our database includes 85 publications tagged with this CPC code.
- Is patent activity under CPC C25C1/22 growing?
- Publication counts under this code: 7 in 2024 vs 2 in 2025 (latest complete years).