Method of purifying yttrium
US9797028B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Oct 20, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | May 27, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of purifying yttrium involves purifying element yttrium by high-temperature saturated dissolution, low-temperature recrystallization, high-temperature reduction and vaporization-based removal of impurities, in a simple manner, and at a low cost, such that yttrium element is unlikely to be contaminated by any raw material used in a manufacturing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.