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:
Apr. 09, 2013
Filed:
Mar. 19, 2012
Tatsuya Takaya, Otsu, JP;
Masahiro Tomamoto, Otsu, JP;
Tatsuya Takaya, Otsu, JP;
Masahiro Tomamoto, Otsu, JP;
Nippon Electric Glass Co., Ltd., Otsu, JP;
Abstract
A glass for a display substrate composed of 50 to 70% SiO, 10 to 25% AlO, 8.4 to 20% BO, 0 to 10% MgO, 6 to 15% CaO, 0 to 10% BaO, 0 to 10% SrO, 0 to 10% ZnO, 0 to 5% TiO, 0 to 5% PO, 0.01 to 0.2% alkali metal, and from 0.01% to less than 0.4% ZrO, as expressed in % by mass. The glass can have a β-OH value of 0.20/mm or more and an area of 0.1 mor more. The glass is produced by mixing raw materials to provide the SiO, AlO, BO, MgO, CaO, BaO, SrO, ZnO, TiO, POand alkali metal contents, electrically melting the raw materials in a melting furnace constructed of a high zirconia refractory; and refining, homogenizing and forming the glass melt.