The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2017
Filed:
Dec. 06, 2013
Applicant:
Nippon Electric Glass Co., Ltd., Shiga, JP;
Inventors:
Shinkichi Miwa, Shiga, JP;
Masahiro Hayashi, Shiga, JP;
Assignee:
NIPPON ELECTRONIC GLASS CO., LTD., Shiga, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/091 (2006.01); C03C 3/095 (2006.01); C03C 3/093 (2006.01);
U.S. Cl.
CPC ...
C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 3/095 (2013.01);
Abstract
Devised are a glass and glass substrate, which contain an alkaline component at a low content, are low in density and thermal expansion coefficient, are high in strain point and Young's modulus, and are excellent in devitrification resistance, meltability, formability, and the like. That is, the glass of the present invention includes as a glass composition, in terms of mass %, 58 to 70% of SiO, 16 to 25% of AlO, 3 to 8% of BO, 0 to 5% of MgO, 3 to 13% of CaO, 0 to 6% of SrO, 0 to 6% of BaO, 0 to 5% of ZnO, 0 to 5% of ZrO, 0 to 5% of TiO, and 0 to 5% of PO.