Anisotropic glass
US9758424B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | May 31, 2016 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | May 31, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C8/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to an anisotropic glass containing, in terms of mol % on the basis of oxides, P2O5 in a content of from 45 mol % to 57 mol %, two or more kinds of alkali metal oxides selected from the group consisting of Li2O, Na2O, K2O, Rb2O, and Cs2O in a total content of from 30 mol % to 54 mol %, and at least one polyvalent element oxide other than P2O5 in a total content of from 0.1 mol % to 20 mol %, and having a birefringence of 30×10−6 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.