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:
Oct. 16, 2012
Filed:
Dec. 23, 2009
Hironori Araki, Milpitas, CA (US);
Yoshitaka Sasaki, Milpitas, CA (US);
Hiroyuki Ito, Milpitas, CA (US);
Shigeki Tanemura, Milpitas, CA (US);
Jianing Zhou, Milpitas, CA (US);
Min LI, Milpitas, CA (US);
Hironori Araki, Milpitas, CA (US);
Yoshitaka Sasaki, Milpitas, CA (US);
Hiroyuki Ito, Milpitas, CA (US);
Shigeki Tanemura, Milpitas, CA (US);
Jianing Zhou, Milpitas, CA (US);
Min Li, Milpitas, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A magnetic head includes: a pole layer including a track width defining portion and a wide portion; and an accommodation layer disposed on a bottom forming layer and having a groove that accommodates the pole layer. The groove includes a first portion for accommodating at least part of the track width defining portion, and a second portion for accommodating at least part of the wide portion. A manufacturing method for the magnetic head includes the steps of: forming a groove defining layer on a nonmagnetic layer that is intended to later become the accommodation layer; forming a mask that covers an area of the nonmagnetic layer where to form the first portion of the groove; etching the nonmagnetic layer so that the second portion of the groove is formed in the nonmagnetic layer; removing the mask; and taper-etching the nonmagnetic layer so that the first portion of the groove is formed in the nonmagnetic layer and the groove is thereby completed.