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:
Mar. 09, 2010
Filed:
Mar. 31, 2006
Takeo Kagami, Tokyo, JP;
Hiroshi Kiyono, Tokyo, JP;
Hiraku Hirabayashi, Tokyo, JP;
Eiichi Omata, Tokyo, JP;
Seiji Yari, Tokyo, JP;
Takamitsu Sakamoto, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Hiroshi Kiyono, Tokyo, JP;
Hiraku Hirabayashi, Tokyo, JP;
Eiichi Omata, Tokyo, JP;
Seiji Yari, Tokyo, JP;
Takamitsu Sakamoto, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A composite thin-film magnetic head includes a substrate, an under layer formed on the substrate, an MR read head element formed on the under layer and provided with a lower shield layer, an upper shield layer and an MR layer in which a sense current flows in a direction perpendicular to a surface of the MR layer through the upper shield layer and the lower shield layer, an inter-shield insulation layer laminated on the MR read head element, an inductive write head element formed on the inter-shield insulation layer and provided with a first magnetic pole layer, a nonmagnetic layer, a second magnetic pole layer whose end portion is opposed to an end portion of the first magnetic pole layer through the nonmagnetic layer, and a write coil, and an additional shield layer formed between the upper shield layer and the first magnetic pole layer.