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. 01, 1998
Filed:
Apr. 29, 1996
Applicant:
Inventors:
Assignee:
Fuji Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428141 ; 428336 ; 4286 / ; 4286 / ; 4286 / ; 4286 / ; 428900 ; 427127 ; 427128 ; 427129 ; 427131 ; 427132 ; 2041922 ;
Abstract
A magnetic recording medium includes an uneven layer, a non-magnetic metal base layer, a magnetic layer and a protective layer which are laminated on a non-magnetic base in the order of description. The uneven layer includes non-magnetic metal deposits containing nitrogen or oxygen, and consists of mutually isolated protrusions having a crystalline phase, which are discretely dispersed on the surface of the non-magnetic base, and a connecting layer having an amorphous phase for filling spaces between the protrusions so as to connect the protrusions with each other.