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. 30, 2012
Filed:
Nov. 20, 2008
Applicants:
Hiroyuki Hieda, Yokohama, JP;
Kazuto Kashiwagi, Ome, JP;
Akira Kikitsu, Yokohama, JP;
Yousuke Isowaki, Yokohama, JP;
Yoshiyuki Kamata, Tokyo, JP;
Inventors:
Hiroyuki Hieda, Yokohama, JP;
Kazuto Kashiwagi, Ome, JP;
Akira Kikitsu, Yokohama, JP;
Yousuke Isowaki, Yokohama, JP;
Yoshiyuki Kamata, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/65 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic recording medium includes a disk substrate, and recording cells arrayed on the disk substrate in a track direction, the recording cells includes a ferromagnetic pattern and a magnetic pattern formed on one of two sidewalls of the ferromagnetic pattern in the track direction and having a lower crystalline magnetic anisotropy constant Ku than that of the ferromagnetic pattern.