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:
Mar. 03, 1992
Filed:
Jul. 11, 1989
Applicant:
Inventors:
Takanori Kudo, Hachioji, JP;
Heigo Ishihara, Nishitama, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 428695 ; 428 64 ; 428 65 ; 428421 ; 428696 ;
Abstract
Disclosed herein are a magnetic recording medium comprising a surface treatment layer provided on the surface of a magnetic coating film by use of a novel surface treatment agent capable of bonding to both magnetic particles and a binder in the magnetic coating film, and a process for producing the magnetic recording medium. It is possible to realize, with good productivity, a magnetic recording medium having excellent wear resistance and high reliability.