Use of novel compounds for selectively extracting rare earths from aqueous solutions including phosphoric acid and associated extraction method
US-2019390297-A1 · Dec 26, 2019 · US
Chemistry & Metallurgy
Chemistry & Metallurgy · 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 | C22B3/06 |
| Official title | — |
| Display label | Chemistry & Metallurgy (mapped technology topic) |
| Total patents | 243 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 10 |
| 2017 | 11 |
| 2018 | 16 |
| 2019 | 15 |
| 2020 | 17 |
| 2021 | 18 |
| 2022 | 15 |
| 2023 | 27 |
| 2024 | 48 |
| 2025 | 43 |
| 2026 | 15 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Use of novel compounds for selectively extracting rare earths from aqueous solutions including phosphoric acid and associated extraction method
US-10450629-B2 · Oct 22, 2019 · US
Methods for Controlling Iron via Magnetite Formation in Hydrometallurgical Processes
US-2019309391-A1 · Oct 10, 2019 · US
Method for removing copper from lithium ion battery scrap and method for recovering metals
US-10400304-B2 · Sep 3, 2019 · US
Silver recovery by ion exchange
US-10351930-B2 · Jul 16, 2019 · US
Leach aid for metal recovery
US-10344353-B2 · Jul 9, 2019 · US
Method for the Treatment of Iron-Containing Sludge
US-2019177815-A1 · Jun 13, 2019 · US
Hydrometallurgical treatment of anode sludge
US-10316389-B2 · Jun 11, 2019 · US
Leaching Copper-Containing Ores
US-2019127822-A1 · May 2, 2019 · US
Process for obtaining lithium from aluminosilicates and intermediate compounds
US-10259719-B2 · Apr 16, 2019 · US
Solubilization of scandium from fluoride bearing materials
US-2019062870-A1 · Feb 28, 2019 · US
Compounds and methods to isolate gold
US-10214796-B2 · Feb 26, 2019 · US
Heap Leaching
US-2019055624-A1 · Feb 21, 2019 · US
Scandium recovery process
US-10190189-B2 · Jan 29, 2019 · US
Method for separating metal components
US-2019017144-A1 · Jan 17, 2019 · US
Heap leaching
US-2018363100-A1 · Dec 20, 2018 · US
Method for recovering gold from an ore or a refining intermediate containing gold
US-2018298465-A1 · Oct 18, 2018 · US
Method for manufacturing nickel powder, and method for operating reaction facility
US-2018257143-A1 · Sep 13, 2018 · US
Heap leaching
US-10060008-B2 · Aug 28, 2018 · US
Vanadium Recovery Method, Method for Producing Electrolytic Solution for Redox Flow Batteries, Vanadium Recovery Device, and Device for Producing Electrolytic Solution for Redox Flow Batteries
US-2018209014-A1 · Jul 26, 2018 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B3/06?
- CPC C22B3/06 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
- How many patents are filed under CPC C22B3/06 (Chemistry & Metallurgy)?
- Our database includes 243 publications tagged with this CPC code.
- Is patent activity under CPC C22B3/06 growing?
- Publication counts under this code: 48 in 2024 vs 43 in 2025 (latest complete years).