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:
Sep. 03, 2024
Filed:
Sep. 25, 2019
Applicant:
Nippon Electric Glass Co., Ltd., Shiga, JP;
Inventors:
Atsushi Mushiake, Shiga, JP;
Atsuki Saito, Shiga, JP;
Assignee:
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/093 (2006.01); C03C 3/083 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/095 (2006.01);
U.S. Cl.
CPC ...
C03C 3/091 (2013.01); C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/093 (2013.01); C03C 3/095 (2013.01);
Abstract
The present invention provides an alkali-free glass sheet, including as a glass composition, in terms of mol %, 55% to 80% of SiO, 10% to 25% of AlO, 0% to 4% of BO, 0% to 30% of MgO, 0% to 25% of CaO, 0% to 15% of SrO, 0% to 15% of BaO, 0% to 5% of ZnO, and 0% to less than 1.0% of YO+LaO, being substantially free of an alkali metal oxide, and having a strain point of 750° C. or more.