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:
May. 30, 2017
Filed:
Sep. 26, 2014
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Satoshi Miyasaka, Tokyo, JP;
Hideko Nakada, Tokyo, JP;
Yasuo Hayashi, Tokyo, JP;
Makoto Fukawa, Tokyo, JP;
Toshifumi Nihei, Tokyo, JP;
Masanobu Shirai, Tokyo, JP;
Naoki Okahata, Tokyo, JP;
Koji Nakagawa, Tokyo, JP;
Kazuhiko Yamanaka, Tokyo, JP;
Kunio Watanabe, Tokyo, JP;
Shiro Tanii, Tokyo, JP;
Nobuaki Ikawa, Tokyo, JP;
Daisuke Kobayashi, Tokyo, JP;
Junichi Miyashita, Tokyo, JP;
Ryosuke Kato, Tokyo, JP;
ASAHI GLASS COMPANY, LIMITED, Chiyoda-ku, JP;
Abstract
A glass sheet has one surface and the other surface facing the one surface in a thickness direction, wherein a fluorine concentration (average fluorine concentration by SIMS at a depth of 1 to 24 μm) in the one surface is higher than that in the other surface. The following expression is satisfied: 0.07≦ΔF/ΔHO. ΔF (mol %) is a value obtained by subtracting an average fluorine concentration in the surface having the lower fluorine concentration from that in the surface having the higher fluorine concentration, and ΔHO (mol %) is an absolute value of a value obtained by subtracting an average HO concentration in the surface having the higher fluorine concentration from that in the surface having the lower fluorine concentration.