Method for the treatment of iron-containing sludge
US-12054804-B2 · Aug 6, 2024 · US
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Obtaining zinc or zinc oxide
Obtaining zinc or zinc oxide · 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 | C22B19/00 |
| Official title | Obtaining zinc or zinc oxide |
| Display label | Obtaining zinc or zinc oxide |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 3 |
| 2020 | 1 |
| 2021 | 2 |
| 2023 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Alloy treatment method
US-2023167526-A1 · Jun 1, 2023 · US
Method for treating alloy
US-2023160035-A1 · May 25, 2023 · US
Reagent compositions for metal solvent extraction and methods of preparation and use thereof
US-2021381080-A1 · Dec 9, 2021 · US
Method for the treatment of iron-containing sludge
US-2021371953-A1 · Dec 2, 2021 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-10793958-B2 · Oct 6, 2020 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-2018305832-A1 · Oct 25, 2018 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-10036096-B2 · Jul 31, 2018 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-9856570-B2 · Jan 2, 2018 · US
Process for reducing the amounts of zinc (zn) and lead (pb) in materials containing iron (fe)
US-2017058378-A1 · Mar 2, 2017 · US
System and method for parallel solultion extraction of one or more metal values from metal-bearing materials
US-2016355937-A1 · Dec 8, 2016 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-9447483-B2 · Sep 20, 2016 · US
Method for isolating valuable metal
US-9234260-B2 · Jan 12, 2016 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-2015361527-A1 · Dec 17, 2015 · US
Method for isolating valuable metal
US-2015240329-A1 · Aug 27, 2015 · US
System and method for parallel solution extraction of one or more metal values from metal-bearing materials
US-9023313-B2 · May 5, 2015 · US