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:
Nov. 13, 2012
Filed:
Apr. 17, 2009
Tai Fujisawa, Otsu, JP;
Shingo Nakane, Otsu, JP;
Tai Fujisawa, Otsu, JP;
Shingo Nakane, Otsu, JP;
Nippon Electric Glass Co., Ltd., Shiga, JP;
Abstract
To provide crystallizable glass that is less likely to be devitrified even when formed into shape by a float process, causes no breakage during a forming step and a crystallization step and is capable of precipitating LAS-based crystals as main crystals by subjecting the glass to heat treatment after being formed into shape, and crystallized glass obtained by crystallizing the crystallizable glass. The crystallizable glass of the present invention is characterized by substantially containing neither AsOnor SbOand having a composition of, in percent by mass, 55.0 to 73.0% SiO, 17.0 to 27.0% AlO, 2.0 to 5.0% LiO, 0 to 1.5% MgO, 0 to 1.5% ZnO, 0 to 1.0% NaO, 0 to 1.0% KO, 0 to 3.8% TiO, 0 to 2.5% ZrO, 0 to 0.6% SnO, and 2.3 to 3.8% TiO+ZrO.