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. 10, 1990
Filed:
Aug. 01, 1989
Applicant:
Inventors:
Akira Kasuga, Kanagawa, JP;
Masaaki Fujiyama, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428323 ; 427131 ; 428329 ; 428336 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium comprising a non-magnetic support having provided thereon an intermediate layer comprising carbon black, a binder and ferromagnetic particles in a weight ratio of from 5% to 25% based on the carbon black; and a magnetic layer provided on said intermediate layer, wherein said magnetic layer comprises ferromagnetic particles and a binder.