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:
Jun. 15, 2010
Filed:
Jun. 08, 2006
Applicants:
Takeshi Okino, Yokohama, JP;
Seiji Morita, Yokohama, JP;
Masatoshi Sakurai, Tokyo, JP;
Shinobu Sugimura, Yokohama, JP;
Inventors:
Takeshi Okino, Yokohama, JP;
Seiji Morita, Yokohama, JP;
Masatoshi Sakurai, Tokyo, JP;
Shinobu Sugimura, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/667 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic disc medium according to an aspect of the present invention includes: a preamble part in a servo area of each of sectors obtained by dividing a surface of the medium in a circumference direction, the preamble part including strip-shaped patterns formed of a plurality of magnetic materials, and each of the strip-shaped patterns formed of the magnetic materials being divided by non-magnetic materials at periodic intervals.