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:
Apr. 02, 2013
Filed:
Sep. 14, 2009
Takateru Seki, Kanagawa-ken, JP;
Zhou Wenjun, Kanagawa-ken, JP;
Kazuo Takeda, Kanagawa-ken, JP;
Takefumi Kubota, Kanagawa-ken, JP;
Takateru Seki, Kanagawa-ken, JP;
Zhou Wenjun, Kanagawa-ken, JP;
Kazuo Takeda, Kanagawa-ken, JP;
Takefumi Kubota, Kanagawa-ken, JP;
HGST Netherlands B.V., Amsterdam, NL;
Abstract
According to one embodiment, a method for manufacturing a thin film magnetic head includes forming on a substrate magnetic head portions having a magnetoresistive element and resistance detection elements for measuring an amount of polishing; slicing the substrate to form at least one row bar; polishing the ABS of each row bar; forming rails on the polished ABS; and cutting each row bar to separate each magnetic head portion. The step of polishing the ABS includes measuring a resistance of each resistance detection element and a resistance of each magnetoresistive element; calculating an offset value between the resistance detection element and the magnetoresistive element; and calculating a final resistance of the resistance detection element by using the calculated offset value. When the resistance of the resistance detection element reaches the final resistance, polishing of the ABS of the row bar is terminated. Other methods are presented as well.