Glass material and glass ceramic product
US6689704B2 · kind B2 · utility
44Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Mar 29, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2215/413
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A SiO2—Al2O3—Li2O component-based glass material, which comprises, as basic components, SiO2: 60-63 wt %; Al2O3: 23-25 wt %; and Li2O: 4-5 wt % and, as modifying components, ZrO2: 1.5-2.5 wt %; TiO2: 0.5-2.5 wt %; MgO: 0.5-1.5 wt %; ZnO: 0.5-1.2 wt %; Na2O: 0.5-2.0 wt %; and K2O: 0.5-2.0 wt %, and further comprises any one of BaO: 0.5-1.0 wt, CaO: 1.0-2.0 wt %, and B2O3: 0.01-1.0 wt %. This can be reheat-formed in a glass state and has a low thermal expansion coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.