Process for preparing a high-purity nickel sulphate solution
US-12570542-B2 · Mar 10, 2026 · US
Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange
Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange · 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 | C01G53/01 |
| Official title | Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange |
| Display label | Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 5 |
| 2024 | 7 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing nickel sulfate
US-2026055007-A1 · Feb 26, 2026 · US
Process for preparing a high-purity nickel sulphate solution
US-12509361-B2 · Dec 30, 2025 · US
Electrode active material, battery, and production method for electrode active material
US-2025372638-A1 · Dec 4, 2025 · US
Electrode active material
US-2025364551-A1 · Nov 27, 2025 · US
Process for preparing a high-purity nickel sulphate solution
US-2025263306-A1 · Aug 21, 2025 · US
Method for manufacturing nickel and cobalt-containing solution from hydroxide containing nickel and cobalt
US-12291762-B2 · May 6, 2025 · US
Processing method of positive electrode active substance waste of lithium ion secondary battery
US-12243993-B2 · Mar 4, 2025 · US
Process for preparing a high-purity nickel sulphate solution
US-2024417274-A1 · Dec 19, 2024 · US
Method for Regenerated Raw Materials from Waste Cadmium Nickel Battery Based on Solvent Extraction
US-2024274906-A1 · Aug 15, 2024 · US
Nickel-iron wet treatment method and application thereof
US-12006227-B2 · Jun 11, 2024 · US
Method for preparing nickel sulfate from nickel-iron-copper alloy
US-11952289-B2 · Apr 9, 2024 · US
Nickel-iron wet treatment method and application thereof
US-2024034639-A1 · Feb 1, 2024 · US
Method for preparing nickel sulfate from ferronickel
US-2024018013-A1 · Jan 18, 2024 · US
Methods for regenerating li and ni from a solution
US-2024011123-A1 · Jan 11, 2024 · US
Method for preparing nickel sulfate from nickel-iron-copper alloy
US-2023399240-A1 · Dec 14, 2023 · US
Method for leaching nickel from nickel ore and method for producing nickel sulfate
US-2023257282-A1 · Aug 17, 2023 · US
Method of producing cathode active material, and method of producing lithium ion battery
US-11728467-B2 · Aug 15, 2023 · US
Method for producing mixed metal solution and method for producing mixed metal salt
US-2023193422-A1 · Jun 22, 2023 · US
Method of recovering cathode active material precursor
US-2023049078-A1 · Feb 16, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01G53/01?
- CPC C01G53/01 is the Cooperative Patent Classification code for “Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange.”
- How many patents are filed under CPC C01G53/01 (Preparation or separation involving a liquid-liquid extraction, an adsorption or an ion-exchange)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC C01G53/01 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).