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:
Dec. 01, 2015
Filed:
Oct. 17, 2011
Applicants:
Takeshi Endo, Osakasayama, JP;
Takafumi Komatsu, Sakai, JP;
Inventors:
Takeshi Endo, Osakasayama, JP;
Takafumi Komatsu, Sakai, JP;
Assignee:
KONICA MINOLTA, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B24B 1/00 (2006.01); G11B 5/84 (2006.01); C03C 19/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/8404 (2013.01); C03C 19/00 (2013.01);
Abstract
A method for manufacturing a glass substrate for a magnetic recording medium, including a polishing step of polishing a principal surface () of a glass substrate () having a chamfered surface () formed on an end surface of the glass substrate (), with use of a polishing pad () having a concave groove () formed in a surface () for supplying a polishing solution, the polishing step is performed in the following condition:10°≦θ