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, 2009
Filed:
Jan. 30, 2006
Akira Kikitsu, Yokohama, JP;
Yoshiyuki Kamata, Tokyo, JP;
Takayuki Yamamoto, Ome, JP;
Hiroyuki Hyodo, Ome, JP;
Akira Kikitsu, Yokohama, JP;
Yoshiyuki Kamata, Tokyo, JP;
Takayuki Yamamoto, Ome, JP;
Hiroyuki Hyodo, Ome, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a patterned magnetic recording media has a magnetic recording layer and a protective layer formed on a substrate, in which the magnetic recording layer including a magnetic material patterned in tracks and a nonmagnetic material filled in between the tracks in a data area, and has a recessed portion formed in an area within 1 mm from an outer media end and extending to the media end. The recessed portion being formed 1 to 50 nm deeper than the data area.