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. 17, 2020
Filed:
May. 11, 2016
Nippon Electric Glass Co., Ltd., Shiga, JP;
Atsuki Saito, Shiga, JP;
Tetsuya Murata, Shiga, JP;
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Abstract
A technical object of the present invention is to devise an alkali-free glass substrate having high devitrification resistance and high heat resistance. In order to achieve the above-mentioned technical object, the alkali-free glass substrate of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO, 8% to 25% of AlO, 0% to less than 3% of BO, 0% to less than 1% of LiO+NaO+KO, 0% to 10% of MgO, 1% to 15% of CaO, 0% to 12% of SrO, 0% to 12% of BaO, 0% to less than 0.05% of AsO, and 0% to less than 0.05% of SbO, and has a thickness of from 0.05 mm to 0.7 mm, a strain point of 700° C. or more, and a β-OH value of less than 0.20/mm.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile