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:
Jan. 10, 1984
Filed:
Sep. 17, 1982
Applicant:
Inventors:
Takashi Suzuki, Takatsuki, JP;
Kunio Hibino, Hirakata, JP;
Mikio Murai, Kawanishi, JP;
Takashi Fujita, Kawanishi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; B32B / ;
U.S. Cl.
CPC ...
428341 ; 428457 ; 428694 ; 428695 ; 428900 ;
Abstract
In a magnetic recording medium having an oxygen-containing thin ferromagnetic metal layer formed on a nonmagnetic substrate, at least one compound capable of suppressing the hydration of the ferromagnetic metal ions by acting thereon is located on or in the vicinity of the surface of the thin ferromagnetic metal layer. A lubricant may further be applied on the thin ferromagnetic metal layer.