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. 25, 2017
Filed:
Oct. 30, 2014
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Inventors:
Akira Watanabe, Kawasaki, JP;
Soichi Oikawa, Hachioji, JP;
Assignee:
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/855 (2006.01); G11B 5/73 (2006.01);
U.S. Cl.
CPC ...
G11B 5/855 (2013.01); G11B 5/732 (2013.01);
Abstract
According to one embodiment, a magnetic recording medium includes a silicon oxide underlayer having a recess pattern having a plurality of recesses, a nonmagnetic underlayer having a first hole pattern having a plurality of holes corresponding to the recess pattern, and a magnetic recording layer having a second hole pattern having a plurality of holes connected with the first hole pattern. The silicon oxide underlayer, the nonmagnetic underlayer, and the magnetic recording layer are formed in order on the substrate.