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. 01, 2016
Filed:
Oct. 15, 2013
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Naoki Okahata, Tokyo, JP;
ASAHI GLASS COMPANY, LIMITED, Chiyoda-ku, JP;
Abstract
A glass substrate of which at least one surface multiple concave and convex portions. Rp representing the size of the convex portion is 37 nm to 200 nm; a tilt angle θp indicating a maximum frequency in the frequency distribution of a tilt angle θ of the convex portion is 20° to 75°; and an absolute value of a difference between θp and θ(θp−θ) is 30° or less, where θindicates a value showing 50% of a cumulative frequency distribution of the tilt angle θ. The concave and convex portion is such that the surface roughness (Ra) is 2 nm to 100 nm, the maximum height difference (P−V) is 35 nm to 400 nm, and the area ratio (S-ratio) is 1.1 to 3.0.