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:
Apr. 30, 2019
Filed:
Oct. 28, 2016
Applicant:
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Inventors:
Tomohiro Moriya, Sendai, JP;
Hitoshi Nakata, Sendai, JP;
Hiroyasu Kataoka, Sendai, JP;
Hiroto Kikuchi, Sendai, JP;
Akira Furuta, Sendai, JP;
Takehito Shimatsu, Sendai, JP;
Assignee:
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/65 (2006.01); G11B 5/73 (2006.01);
U.S. Cl.
CPC ...
G11B 5/65 (2013.01); G11B 5/732 (2013.01);
Abstract
The purpose of the invention is to provide a magnetic recording medium in which the surface roughness of the magnetic recording layer can be reduced without deterioration of the magnetic properties of the magnetic recording layer. The magnetic recording medium of the present invention includes a substrate, a seed layer on the substrate, and a magnetic recording layer on the seed layer, wherein the seed layer contains Mn, Cr, and O, and has a spinel structure.