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:
Dec. 19, 2013
Applicant:
Hoya Corporation, Tokyo, JP;
Inventors:
Kazuo Tachiwana, Tokyo, JP;
Teruo Yamashita, Tokyo, JP;
Shigeru Hayashi, Tokyo, JP;
Junko Akojima, Tokyo, JP;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 23/00 (2006.01); B24B 13/00 (2006.01); B24B 7/24 (2006.01);
U.S. Cl.
CPC ...
C03C 23/0075 (2013.01); B24B 7/241 (2013.01); B24B 13/00 (2013.01);
Abstract
Provided is a method for manufacturing an optical element from glass after polishing and in which either or both of a cleaning liquid used in a cleaning step for the glass after polishing and a rinsing liquid used in a rinsing step after the cleaning step are a liquid that inhibits expansion of cracked parts present on the surface of the glass after polishing.