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. 23, 2014
Filed:
Dec. 28, 2011
Akihiro Koyama, Takarazuka, JP;
Satoshi Ami, Yokkaichi, JP;
Kazuaki Hashimoto, Akiruno, JP;
Tetsuo Takano, Tachikawa, JP;
Akihiro Koyama, Takarazuka, JP;
Satoshi Ami, Yokkaichi, JP;
Kazuaki Hashimoto, Akiruno, JP;
Tetsuo Takano, Tachikawa, JP;
AvanStrate Inc., Mie, JP;
Hoya Corporation, Tokyo, JP;
Abstract
A cover glass having a compressive-stress layer on the principal surfaces thereof, and having a glass composition containing 50% to 70% by mole of SiO, 3% to 20% by mole of AlO, 5% to 25% by mole of NaO, more than 0% by mole and less than or equal to 2.5% by mole of LiO, 0% to 5.5% by mole of KO, and 0% to less than 3% by mole of BO. Also disclosed is a method for producing a cover glass which includes: (i) preparing molten glass by melting a glass raw material; (ii) forming the prepared molten glass into a plate-like shape by a down-draw process and thereby obtaining a glass substrate; and (iii) forming a compressive-stress layer on the surface of the glass substrate.