Glass-ceramics and method for manufacturing the same
US8114795B2 · kind B2 · utility
28Cited by
11References
12Claims
0Family size
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Key dates
| Filing date | Dec 15, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Aug 17, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
For providing glass-ceramics having properties suitable for use as a substrate of an information storage medium of next generation such as one for the perpendicular magnetic recording system without employing arsenic and antimony components which adversely affect human beings and the environment, there are provided glass-ceramics comprising SiO2, Li2O and Al2O3 on oxide basis, comprising lithium disilicate as a crystal phase, and comprising one or more elements selected from the group consisting of Sn, Ce, Mn, W, Ta, Bi, Nb, S, Cl and F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.