Glass composition
US8399370B2 · kind B2 · utility
6Cited by
6References
16Claims
0Family size
Assignee
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Key dates
| Filing date | May 2, 2011 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | May 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1333
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glass composition which is reduced in the amount of residual bubbles and is produced using smaller amounts of an environmentally unfriendly component such as arsenic oxide and antimony oxide. This glass composition comprises, in terms of mass %; 40-70% SiO2; 5-20% B2O3; 10-25% Al2O3; 0-10% MgO; 0-20% CaO; 0-20% SrO; 0-10% BaO; 0.001-0.5% Li2O; 0.01-0.5% Na2O; 0.002-0.5% K2O; and 0-1.0%, excluding 0%, Cl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.