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:
Sep. 08, 2009
Filed:
Jan. 20, 2006
Naoki Koyama, Tokyo, JP;
Kouji Okazaki, Kanagawa, JP;
Izuru Ishii, Kanagawa, JP;
Shuichi Kojima, Kanagawa, JP;
Shigeru Tadokoro, Kanagawa, JP;
Naoki Koyama, Tokyo, JP;
Kouji Okazaki, Kanagawa, JP;
Izuru Ishii, Kanagawa, JP;
Shuichi Kojima, Kanagawa, JP;
Shigeru Tadokoro, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
Even if the track and gap widths are made narrow in a read head, a narrow track head has so far been unable to afford satisfactory off-track characteristics because of a wide shield spacing over electrodes. The invention provides a magnetic head wherein, in the height direction of a magnetoresistive element, the spacing between an upper magnetic shield and a lower magnetic shield at an air bearing surface is narrower than the spacing between the upper and lower magnetic shields formed over a thickest portion of each of electrodes in contact with associated magnetic domain control layers.