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:
May. 08, 2012
Filed:
Jan. 20, 2010
Yoshitaka Sasaki, Santa Clara, CA (US);
Hiroyuki Ito, Milpitas, CA (US);
Takehiro Horinaka, Milpitas, CA (US);
Takehiro Kamigama, Hong Kong, CN;
Tatsushi Shimizu, Hong Kong, CN;
Yoshitaka Sasaki, Santa Clara, CA (US);
Hiroyuki Ito, Milpitas, CA (US);
Takehiro Horinaka, Milpitas, CA (US);
Takehiro Kamigama, Hong Kong, CN;
Tatsushi Shimizu, Hong Kong, CN;
Headway Technologies, Inc., Milpitas, CA (US);
SAE Magnetics (H. K.) Ltd., Hong Kong, CN;
Abstract
A thin-film magnetic head including a structure in which a main magnetic pole layer including a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side, and a thin-film coil wound about the write shield layer or main magnetic pole layer are laminated. The main magnetic pole layer is incorporated in a magnetic pole forming depression of a base insulating layer, the magnetic pole forming depression being sunken into a form corresponding to the main magnetic pole layer. The thin-film magnetic head has a remnant insulating film, formed on the outside of the magnetic pole forming depression so as to substantially surround the magnetic pole forming depression, covering the base insulating layer.