Method of coating micrometer sized inorganic particles
US6890593B2 · kind B2 · utility
24Cited by
21References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
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 having a particle size of about 1 to 100 micrometers with nanometer-sized coating particles, and firing the mixture to soften or melt the nanometer-sized particles about the inorganic particles, forming a moisture impervious coating. The coated particles are washed to remove excess particles, and dried. Coated moisture sensitive phosphor particles are impervious to moisture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.