Method of making pure cobalt metal powder substantially free of divalent cationic impurities
US5154757A · kind A · utility
4Cited by
4References
8Claims
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Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing pure cobalt metal powder involves the removal of divalent cationic impurities from a trivalent hexamine cobalt chloride solution. This solution is then decomposed to an insoluble cobalt oxide-containing material, from which pure cobalt metal powder is obtained through a chemical reduction process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.