Metal extractant and separation recovery method of metal ions using metal extractant
US-2025243560-A1 · Jul 31, 2025 · US
Obtaining zirconium or hafnium {(treatment or purification of solutions by liquid-liquid extraction, by ion exchange or by adsorption C22B3/00, C01G25/003, C01G27/003)}
Obtaining zirconium or hafnium {(treatment or purification of solutions by liquid-liquid extraction, by ion exchange or by adsorption C22B3/00, C01G25/003, C01G27/003)} · 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 | C22B34/14 |
| Official title | Obtaining zirconium or hafnium {(treatment or purification of solutions by liquid-liquid extraction, by ion exchange or by adsorption C22B3/00, C01G25/003, C01G27/003)} |
| Display label | Obtaining zirconium or hafnium {(treatment or purification of solutions by liquid-liquid extraction, by ion exchange or by adsorption C22B3/00, C01G25/003, C01G27/003)} |
| Total patents | 32 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for recovering solid state electrolyte from all-solid-state-battery
US-2025233222-A1 · Jul 17, 2025 · US
Method for separating rare earth element
US-11326228-B2 · May 10, 2022 · US
Separation of Radiometals
US-2022118379-A1 · Apr 21, 2022 · US
Method for recovering a minor metal and/or rare-earth metal
US-11299796-B2 · Apr 12, 2022 · US
Method for preparing high-melting-point metal powder through multi-stage deep reduction
US-11241740-B2 · Feb 8, 2022 · US
System and Process for Production of Isotopes and Isotope Compositions
US-2021386878-A1 · Dec 16, 2021 · US
System and process for production of isotopes and isotope compositions
US-11197938-B1 · Dec 14, 2021 · US
Method for separating rare earth element
US-2020308669-A1 · Oct 1, 2020 · US
Method for preparing high-melting-point metal powder through multi-stage deep reduction
US-2020276648-A1 · Sep 3, 2020 · US
Method of recovering metal compounds from solid oxide fuel cell scrap
US-10651479-B2 · May 12, 2020 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-10494697-B2 · Dec 3, 2019 · US
Method for recovering a minor metal and/or rare-earth metal
US-2019292630-A1 · Sep 26, 2019 · US
Methods for reducing impurities in magnesium, purified magnesium, and zirconium metal production methods
US-10422017-B2 · Sep 24, 2019 · US
Method of recovering metal compounds from solid oxide fuel cell scrap
US-2019245216-A1 · Aug 8, 2019 · US
Methods for reducing impurities in magnesium, purified magnesium, and zirconium metal production methods
US-2018327885-A1 · Nov 15, 2018 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-2018320249-A1 · Nov 8, 2018 · US
Method of refining of scandium oxide from concentrates using solvent extraction
US-10047414-B2 · Aug 14, 2018 · US
Zirconium extractant and method for extracting zirconium
US-10036082-B2 · Jul 31, 2018 · US
Separation method
US-10035078-B2 · Jul 31, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C22B34/14?
- CPC C22B34/14 is the Cooperative Patent Classification code for “Obtaining zirconium or hafnium {(treatment or purification of solutions by liquid-liquid extraction, by ion exchange or by adsorption C22B3/00, C01G25/003, C01G27/003)}.”
- How many patents are filed under CPC C22B34/14 (Obtaining zirconium or hafnium {(treatment or purification of solutions by liquid-liquid extraction, by ion exchange or by adsorption C22B3/00, C01G25/003, C01G27/003)})?
- Our database includes 32 publications tagged with this CPC code.
- Is patent activity under CPC C22B34/14 growing?
- Publication counts under this code: 4 in 2022 vs 2 in 2025 (latest complete years).