Separation of rare earth elements
US12157930B2 · kind B2 · utility
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43Claims
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Key dates
| Filing date | Nov 19, 2020 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Jan 28, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for purifying lutetium includes providing a solid composition comprising ytterbium and lutetium and subliming or distilling ytterbium from the solid composition at a temperature of about 1196° C. to about 3000° C. to leave a lutetium composition comprising a higher weight percentage of lutetium than was present in the solid composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.