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:
Oct. 05, 2010
Filed:
Dec. 17, 2008
Applicants:
Tetsuo Suzuki, Tokyo, JP;
Yoshio Kawakami, Saitama, JP;
Kazuhiro Nakiri, Shizuoka, JP;
Inventors:
Assignees:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Shoda Techtron Corp., Hamamatsu-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of manufacturing a disk substrate includes a disk substrate forming step of forming a disk substrate; and an outer chamfering step of chamfering an outer edge of the disk substrate. The outer chamfering step includes chamfering the outer edge by bringing an end surface of a cylindrical-shaped outer chamfering grindstone having a hollow portion on its end into contact with the outer edge such that the hollow portion faces the outer edge while rotating each of the outer chamfering grindstone and the disk substrate.