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:
Sep. 07, 1993
Filed:
Nov. 21, 1990
Applicant:
Inventor:
Makoto Mizukami, Yokosuka, JP;
Assignee:
Victor Company of Japan, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428 64 ; 428668 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium includes a primary coat formed on a non-magnetic base and a magnetic film of a CoP alloy formed on the primary coat, wherein the primary coat is a metal simple substance selected from the group of Cr, V and W or an alloy of two or more of them, and the magnetic film is at least one of the CoP alloys represented by the following formulae, wherein X, Y, Z, a and b denote atomic percent (at %):