Method of coating micrometer sized inorganic particles
US6811813B1 · kind B1 · utility
7Cited by
17References
3Claims
0Family size
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Inventor
Key dates
| Filing date | Oct 13, 1999 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jul 29, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7786
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for coating moisture sensitive inorganic particles, such as phosphors, comprising mixing the inorganic particles which have a particle size of about 1 to 100 micrometers with nanometer sized coating particles, as of silica, and firing to soften or melt the nanometer sized particles, forming a moisture-impervious inorganic coating on the inorganic particles. The coated particles are washed to remove any uncoated particles and dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.