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:
Apr. 09, 1996
Filed:
Jan. 31, 1995
Applicant:
Inventors:
Kiminori Tamai, Saku, JP;
Takashi Handa, Saku, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; B32B / ;
U.S. Cl.
CPC ...
4286 / ; 428328 ; 428408 ; 428402 ; 428403 ; 4286 / ; 428900 ; 427128 ;
Abstract
Iron carbide particles are heat treated in a nitrogen atmosphere to form magnetic particles each comprising an iron base core and a carbon base surface. This magnetic particle powder having increased saturation magnetization .sigma.s is mixed with a binder to form a magnetic layer on a substrate, thus providing a magnetic recording medium which exhibits improved remanence Br and reproduces increased outputs.