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. 19, 2013
Filed:
Jun. 23, 2011
Applicant:
Hazuki Nakae, Kyoto, JP;
Inventor:
Hazuki Nakae, Kyoto, JP;
Assignee:
Konica Minolta Advanced Layers, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 (2006.01); C03B 18/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to the process for producing a glass substrate for an information-recording medium of the present invention, a glass plateis roughly polished by a polishing machineusing a polishing liquidcontaining a polishing agent containing cerium oxide as a main component in the rough polishing step, followed by cleaning so as to adjust the amount of cerium oxide on the surface of the glass plate to be 0.125 ng/cm2 or less. The glass plate after rough polishing is thereafter finely polished with a polishing agent containing colloidal silica in the fine polishing step.