Fluorescent substance and manufacturing method thereof
US5676882A · kind A · utility
1Cited by
3References
5Claims
0Family size
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Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/655
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluorescent substance of which main component is comprised from 32 mol % to 35 mol % of silicon element and from 68 mol % to 65 mol % of oxygen element, and in which includes from 10 ppm to 1 wt % of silicon carbide and silicon nitride as an activator. And, a manufacturing method of the fluorescent substance by hydrolyzing silicon alkoxide by using alkali or acid catalyzer under the presence of carbon, and by heat treating the obtained precursor at the temperature of 500.degree. C. to 900.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.