Methods for the separation and/or purification of metals
US-2026098320-A1 · Apr 9, 2026 · US
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Treatment or purification of solutions, e.g. obtained by leaching (C22B47/0054 takes precedence)
Treatment or purification of solutions, e.g. obtained by leaching (C22B47/0054 takes precedence) · 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 | C22B47/0081 |
| Official title | {Treatment or purification of solutions, e.g. obtained by leaching (C22B47/0054 takes precedence)} |
| Display label | Treatment or purification of solutions, e.g. obtained by leaching (C22B47/0054 takes precedence) |
| Total patents | 22 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2019 | 1 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treatment process for crystallizing a metal sulfate
US-2026070803-A1 · Mar 12, 2026 · US
Process for selectively capturing chemical elements from a polymetallic sample
US-2026055006-A1 · Feb 26, 2026 · US
Methods for the separation and/or purification of metals
US-12492448-B2 · Dec 9, 2025 · US
Treatment process for crystallizing a metal sulfate
US-12441621-B2 · Oct 14, 2025 · US
Process for the recovery of cathode materials in the recycling of batteries
US-12381268-B2 · Aug 5, 2025 · US
Process for the recovery of metals from oxidic ores
US-12215407-B2 · Feb 4, 2025 · US
Oxidative and reductive leaching methods
US-2025034676-A1 · Jan 30, 2025 · US
Process for recovering metals from recycled rechargeable batteries
US-12000014-B2 · Jun 4, 2024 · US
Recycling method for mixed waste material of lithium nickel manganese cobalt oxide and lithium iron phosphate
US-2023332267-A1 · Oct 19, 2023 · US
Methods for the separation and/or purification of metals
US-2023175097-A1 · Jun 8, 2023 · US
Methods for manufacturing positive electrode active material precursor material and positive electrode active material for secondary lithium battery, and positive electrode active material for secondary lithium battery manufactured thereby
US-2023106658-A1 · Apr 6, 2023 · US
Method for anaerobically cracking power battery
US-11591525-B2 · Feb 28, 2023 · US
Method of recovering cathode active material precursor
US-2023049078-A1 · Feb 16, 2023 · US
Process for the recovery of cathode materials in the recycling of batteries
US-2023042034-A1 · Feb 9, 2023 · US
Process for the recovery of cathode materials in the recycling of batteries by removing aluminum and iron
US-11509000-B2 · Nov 22, 2022 · US
Process for the recovery of metals from oxidic ores
US-2022290273-A1 · Sep 15, 2022 · US
Process for the recovery of cathode materials in the recycling of batteries
US-2022149452-A1 · May 12, 2022 · US
Method for anaerobically cracking power battery
US-2021380886-A1 · Dec 9, 2021 · US
Process for recovering metals from recycled rechargeable batteries
US-2021317547-A1 · Oct 14, 2021 · US