Method for producing lithium hydroxide
US-12515960-B2 · Jan 6, 2026 · US
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Obtaining zinc otherwise than by distilling
Obtaining zinc otherwise than by distilling · 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 | C22B19/20 |
| Official title | Obtaining zinc otherwise than by distilling |
| Display label | Obtaining zinc otherwise than by distilling |
| Total patents | 17 |
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 | 3 |
| 2016 | 2 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 2 |
| 2024 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for recovering non-ferrous metals from industrial mineral residues
US-12157928-B2 · Dec 3, 2024 · US
Environmentally-Friendly Compositions and Methods for Extracting Minerals and Metals from Ore
US-2024318278-A1 · Sep 26, 2024 · US
Environmentally-friendly compositions and methods for extracting minerals and metals from ore
US-12000016-B2 · Jun 4, 2024 · US
Autoclave and pressure oxidation method
US-2024110258-A1 · Apr 4, 2024 · US
Zinc recovery method
US-2024044029-A1 · Feb 8, 2024 · US
Method for producing lithium hydroxide
US-2023132311-A1 · Apr 27, 2023 · US
Method for treating alloy
US-2023071697-A1 · Mar 9, 2023 · US
Process for recovering non-ferrous metals from industrial mineral residues
US-2021292869-A1 · Sep 23, 2021 · US
Environmentally-Friendly Compositions and Methods for Extracting Minerals and Metals from Ore
US-2020340076-A1 · Oct 29, 2020 · US
Carbothermal reduction reactor system, components thereof, and methods of using same
US-10400309-B2 · Sep 3, 2019 · US
Methods and systems for removing polar compounds from a metal-containing solution
US-2019062867-A1 · Feb 28, 2019 · US
Synthesis of nanoparticles of metals and metal oxides using plant seed extract
US-9428399-B1 · Aug 30, 2016 · US
Process for the removal of metal or impurities from electric arc furnace dust
US-2016102382-A1 · Apr 14, 2016 · US
Recovery of base metals from sulphide ores and concentrates
US-9169534-B2 · Oct 27, 2015 · US
Compositions and methods of using a ketoxime in a metal solvent extraction reagent
US-8986633-B2 · Mar 24, 2015 · US
Methods of metal extraction using oximes
US-8945490-B2 · Feb 3, 2015 · US