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:
Dec. 14, 1982
Filed:
Oct. 24, 1980
Applicant:
Inventors:
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428329 ; 252 6254 ; 360134 ; 4284259 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium which comprises a base material and a magnetic layer provided thereon. The magnetic layer comprises magnetic particles, a cellulose resin and a polyurethane resin as the binders and .alpha.-Fe.sub.2 O.sub.3 particles, whereby the dispersibility of the magnetic particles in the magnetic layer is enhanced without deterioration of the durability of the magnetic layer.