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:
Mar. 21, 1989
Filed:
Mar. 24, 1988
Applicant:
Inventors:
Kazuo Inoue, Yamaguchi, JP;
Motozo Yoshikiyo, Yamaguchi, JP;
Shizuka Yoshii, Yamaguchi, JP;
Iwao Okamoto, Yamaguchi, JP;
Assignee:
Ube Industries, Ltd., Ube, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 427 42 ; 427 531 ; 427131 ; 427132 ; 428611 ; 428678 ; 428615 ; 428900 ;
Abstract
A vertical magnetic recording medium excellent in durability and recording property in which a first magnetic film comprising Co--Cr or Co--Cr--W as the main ingredient is formed on a substrate and the second magnetic film comprising Co--Cr--W--C as the main ingredient is formed on the first magnetic film, as well as the production process therefor are provided.