Method for producing β-sialon fluorescent material
US10190044B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Aug 4, 2016 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Mar 15, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/0883
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing a β-sialon fluorescent material can be provided. The method includes preparing a composition containing silicon nitride that contains aluminium, an oxygen atom, and europium, heat-treating the composition in a rare gas atmosphere or in a vacuum, and contacting the heat-treated composition with a gas containing elemental fluorine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.