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. 07, 2017
Filed:
Dec. 25, 2012
Applicant:
Nippon Electric Glass Co., Ltd., Shiga, JP;
Inventors:
Takahiro Kawaguchi, Shiga, JP;
Shinkichi Miwa, Shiga, JP;
Assignee:
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/091 (2006.01); C03C 3/093 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
C03C 3/091 (2013.01); C03C 3/093 (2013.01); H01L 51/0096 (2013.01);
Abstract
Provided is an alkali-free glass, including as a glass composition, in terms of mol %, 60 to 70% of SiO, 9.5 to 17% of AlO, 0 to 9% of BO, 0 to 8% of MgO, 2 to 15% of CaO, 0.1 to 10% of SrO, and 0.5 to 4% of BaO, having a molar ratio (CaO+SrO+BaO)AlOof 0.6 to 1.0, and being substantially free of alkali metal oxides.