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:
Jan. 16, 2018
Filed:
Feb. 25, 2014
Mikio Ikenishi, Tokyo, JP;
Akihiro Shoji, Tokyo, JP;
Yoshitake Tanno, Tokyo, JP;
Isao Tanaka, Tokyo, JP;
Mikio Ikenishi, Tokyo, JP;
Akihiro Shoji, Tokyo, JP;
Yoshitake Tanno, Tokyo, JP;
Isao Tanaka, Tokyo, JP;
HOYA CORPORATION, Tokyo, JP;
Abstract
A glass lens blank for polishing in which a thickness of a defect-containing layer is suppressed to a minimum and thus it is possible to shorten the processing time required for grinding and polishing the glass lens blank for polishing after press-molding, a method of manufacturing the same, and a method of manufacturing an optical lens. A glass lens blank for polishing of which at least a main surface is a press-molding surface, wherein a defect-containing layer formed on the main surface has a thickness of 50 μm or less.