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:
Jul. 25, 1989
Filed:
Mar. 06, 1987
Applicant:
Inventors:
Shinichi Kitahata, Osaka, JP;
Mikio Kishimoto, Osaka, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428141 ; 427130 ; 427131 ; 428323 ; 428328 ; 428329 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium comprising a substrate and a magnetic layer formed on at least one surface of the substrate, wherein magnetic powder in the magnetic layer has a degree of orientation of magnetic easy axis of the magnetization in a direction perpendicular to the magnetic layer of 0.60 or higher when measured by the Mossbauer method, has good surface smoothness, has good electromagnetic conversion properties, and is suitable for high density recording.
Kitahata, Shinichi. (1989). Magnetic recording medium and method for producing the same (U.S. Patent No. 4851276). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4851276
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