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:
Jun. 04, 2019
Filed:
Jan. 19, 2016
Agc Inc., Chiyoda-ku, JP;
Izuru Kashima, Tokyo, JP;
Yusuke Fujiwara, Tokyo, JP;
Kiyoshi Tamai, Tokyo, JP;
Yuichi Suzuki, Tokyo, JP;
Daisuke Kobayashi, Tokyo, JP;
Yoichi Sera, Tokyo, JP;
Taku Yamada, Tokyo, JP;
Noriko Tanabe, Tokyo, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
A chemically strengthened glass having a compressive stress layer formed in a surface layer thereof according to an ion exchange method, in which a surface of the glass has polishing flaws, the glass has a texture direction index (Stdi) of 0.30 or more, a hydrogen concentration Y in a region to a depth X from an outermost surface of the glass satisfies the following relational equation (I) at X=from 0.1 to 0.4 (μm), and a surface strength F (N) measured by a ball-on-ring test is (F≥1400×t) relative to a sheet thickness t (mm) of the glass:  (I)in which meanings of respective symbols in the equation (I) are as follows: Y: hydrogen concentration (as HO, mol/L), X: depth from the outermost surface of the glass (μm), a: −0.300 or more, and b: 0.220 or less.