Positive electrode active material using spent battery leachate for secondary battery and method of preparing same
US-2025313917-A1 · Oct 9, 2025 · US
of acyclic or carbocyclic compounds of different types
of acyclic or carbocyclic compounds of different types · 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 | C22B3/402 |
| Official title | {of acyclic or carbocyclic compounds of different types} |
| Display label | of acyclic or carbocyclic compounds of different types |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 6 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 3 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Diglycolamide derivatives for separation and recovery of rare earth elements from aqueous solutions
US-12398444-B2 · Aug 26, 2025 · US
Use of synergistic mixture of extractants for extracting rare earth elements from an aqueous medium comprising phosphoric acid
US-12037660-B2 · Jul 16, 2024 · US
Method for recycling hydrophobic deep eutectic solvent and nickel leaching method
US-2024076548-A1 · Mar 7, 2024 · US
Method for leaching nickel from nickel ore and method for producing nickel sulfate
US-2023257282-A1 · Aug 17, 2023 · US
Use of synergistic mixture of extractants for extracting rare earth elements from an aqueous medium comprising phosphoric acid
US-2022010409-A1 · Jan 13, 2022 · US
Methods for separation and recovery of rare earth elements from aqueous solutions using diglycolamide derivatives
US-2022002840-A1 · Jan 6, 2022 · US
Diglycolamide derivatives for separation and recovery of rare earth elements from aqueous solutions
US-2022002229-A1 · Jan 6, 2022 · US
Process for recovering gold from ores
US-11041227-B2 · Jun 22, 2021 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-10494697-B2 · Dec 3, 2019 · US
A process for recovering gold from ores
US-2019292628-A1 · Sep 26, 2019 · US
Method for recovery of copper and zinc
US-10221493-B2 · Mar 5, 2019 · US
Recovery of gold from solution
US-10144989-B2 · Dec 4, 2018 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-2018320249-A1 · Nov 8, 2018 · US
Method of preparing a gold-containing solution and process arrangement for recovering gold and silver
US-10060007-B2 · Aug 28, 2018 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-10047414-B2 · Aug 14, 2018 · US
Recovery of gold from solution
US-2018073103-A1 · Mar 15, 2018 · US
Gallium extraction agent and gallium extraction method
US-9803262-B2 · Oct 31, 2017 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-2017233849-A1 · Aug 17, 2017 · US
Method for recovery of copper and zinc
US-2016369417-A1 · Dec 22, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/402?
- CPC C22B3/402 is the Cooperative Patent Classification code for “of acyclic or carbocyclic compounds of different types.”
- How many patents are filed under CPC C22B3/402 (of acyclic or carbocyclic compounds of different types)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/402 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).