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. 04, 1989
Filed:
Mar. 17, 1987
Applicant:
Inventors:
Issei Nakamura, Hachioji, JP;
Kazumasa Matsumoto, Tokyo, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428328 ; 427128 ; 428329 ; 4284259 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium is disclosed which comprises a support having formed thereon a magnetic layer containing a magnetic metallic powder with no change in its differential thermal curve up to a temperature of at least 80.degree. C. Said magnetic metallic powder contains an alloy system of at least one metal selected from the group consisting of iron, nickel and cobalt as the main component(s) with or without at least one other element, such as Fe-Ni-Co, Fe-Mn-Zn, Fe-Co-Ni-P, Fe-Ni-Zn, Fe-Ni-Cr-P, Fe-Co-Ni-Cr, Fe-Co-P, Fe-Ni, Fe-Ni-Mn, Co-Ni, Co-Ni-P, Fe-Al, Fe-Mn-Zn or Fe-Al-P.