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. 05, 1994
Filed:
Feb. 23, 1993
Applicant:
Inventors:
Shogo Nasu, Suma-ku, Kobe-shi, Hyogo-ken, JP;
Koji Saiki, Toyonaka-shi, Osaka-fu, JP;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428336 ; 4286 / ; 4286 / ; 4286 / ; 428900 ; 427128 ; 427131 ; 427132 ; 2041922 ;
Abstract
A magnetic recording medium is disclosed, wherein a magnetic film comprising a partially oxidized cobalt with its in-plane coercive force not less than 500 Oe is provided on a substrate. Further disclosed are megnetic recording media, wherein there is further provided an underlayer comprising Cr, Fe or an Fe-Co alloy under said magnetic film, and wherein a perpendicular magnetic anisotropic film comprising a partially oxidized metal is further provided on said magnetic film. The magnetic recording media of the present invention are high in recording density and reproduction output, low in noise and high in S/N ratio.