Patent · US Active

White glass

US9938181B2 · kind B2 · utility

0Cited by

4References

26Claims

0Family size

Assignee

ASAHI GLASS CO., LTD. · JP

Inventors

Junko MIYASAKA · Tokyo, JP
Seiki Ohara · Tokyo, JP
Kenji KITAOKA · Tokyo, JP

Key dates

Filing date	Jul 28, 2015
Grant date	Apr 10, 2018
Priority date	—
Expiry date	Aug 6, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/315
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A white glass includes, in terms of mole percentage on the basis of oxides, from 50% to 74% of SiO2, from 0 to 8% of B2O3, from 1% to 8% of Al2O3, from 0 to 18% of MgO, from 0 to 7% of CaO, from 0 to 10% of SrO, from 0 to 12% of BaO, from 0 to 5% of ZrO2, from 5% to 15% of Na2O and from 2% to 10% of P2O5. In the white glass, a total content of CaO, SrO and BaO is from 1% to 22%, a total content RO of MgO, CaO, SrO and BaO is from 5% to 25% and a ratio CaO/RO of a content of CaO to the RO is 0.7 or less.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.