Process for preparaing polyhedral .alpha.-alumina particles
US5523074A · kind A · utility
90Cited by
10References
7Claims
0Family size
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Key dates
| Filing date | Jul 1, 1993 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Jul 1, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Polyhedral .alpha.-alumina particles having a particle size on the order of a micrometer and high purity are prepared by maintaining a compression molded aluminum material having, on its surface, a binary compound of aluminum and oxygen atoms or a ternary compound of aluminum, oxygen and hydrogen atoms in an aluminum melt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.