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. 14, 2003
Filed:
Feb. 28, 2001
Substrate for magnetic recording medium, manufacturing method thereof, and magnetic recording medium
Applicant:
Inventor:
Takashi Shimada, Nagano, JP;
Assignee:
Fuji Electric Co., Ltd., Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 ;
U.S. Cl.
CPC ...
G11B 5/66 ;
Abstract
A slowly advancing tape-shaped matrix is pressed into contact with a surface of a rapidly rotating non-magnetic substrate for a magnetic recording medium. An abrasive slurry is added to the matrix. The area contact rate between the matrix and the surface, as well as the contact pressure per unit area between the matrix and the surface are regulated to both polish and slightly roughen the surface in a single process. In the case of a glass presubstrate, the glass is chemically strengthened before being surface-treated.
Shimada, Takashi. (2003). Substrate for magnetic recording medium, manufacturing method thereof, and magnetic recording medium (U.S. Patent No. 6632547). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6632547
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile