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. 22, 2011
Filed:
Aug. 24, 2007
Yosuke Antoku, Tokyo, JP;
Tsuyoshi Umehara, Tokyo, JP;
Tetsuya Kuwashima, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A thin-film magnetic head includes a magneto-resistive effect device of the CPP structure including a multilayer film comprising a stack of a fixed magnetization layer, a nonmagnetic layer and a free layer stacked one upon another in order, with a sense current applied in the stacking direction of the multilayer film, and an upper shield layer and a lower shield layer with the magneto-resistive effect device held between them in the thickness direction, and further comprises a bias magnetic field-applying layer located at each end of the multilayer film in the widthwise direction and a re-magnetizer unit designed such that when the bias magnetic field-applying layers malfunction, they are re-magnetized to go back to normal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile