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:
Oct. 06, 1987
Filed:
Oct. 15, 1986
Applicant:
Inventors:
Kenji Sumiya, Suita, JP;
Yoji Takeuchi, Takatsuki, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
4284111 ; 427128 ; 427131 ; 427132 ; 428457 ; 428694 ; 428695 ; 428900 ;
Abstract
A magnetic recording medium improved in corrosion resistance and enhanced in running stability, which comprises a non-magnetic support, a magnetic layer provided on one surface (i.e. the major surface) of the support and a back coat layer provided on the other surface (i.e. the back surface) of the support, the magnetic layer comprising magnetic metal and the back coat layer comprising a salt formed between a nitrogen-containing heterocyclic compound and an aliphatic amine.