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:
Jul. 25, 2017
Filed:
Jun. 29, 2015
Asahi Glass Company, Limited, Tokyo, JP;
ASAHI GLASS COMPANY, LIMITED, Tokyo, JP;
Abstract
The present invention relates to a float glass for chemical strengthening, containing a bottom surface coming into contact with a molten metal at the time of forming and a top surface opposing the bottom surface, in which a difference Δ(N—NaO) determined by subtracting a square of a normalized NaO surface concentration of the bottom surface which is a value obtained by dividing an NaO concentration in the bottom surface by an NaO concentration at a depth position of 100 μm therefrom, from a square of a normalized NaO surface concentration of the top surface which is a value obtained by dividing an NaO concentration in the top surface by an NaO concentration at a depth position of 100 μm therefrom, is 0.040 or less.