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. 10, 2011
Filed:
Oct. 13, 2006
Yoshitaka Sasaki, Milpitas, CA (US);
Hiroyuki Itoh, Milpitas, CA (US);
Shigeki Tanemura, Milpitas, CA (US);
Tatsushi Shimizu, Hong Kong, CN;
Tatsuya Shimizu, Hong Kong, CN;
Yoshitaka Sasaki, Milpitas, CA (US);
Hiroyuki Itoh, Milpitas, CA (US);
Shigeki Tanemura, Milpitas, CA (US);
Tatsushi Shimizu, Hong Kong, CN;
Tatsuya Shimizu, Hong Kong, CN;
Headway Technologies, Inc., Milpitas, CA (US);
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
A magnetic layer for writing incorporates: a pole layer having an end face located in a medium facing surface; and an upper yoke layer. A first magnetic layer for flux concentration is connected to the pole layer at a location away from the medium facing surface, and allows a magnetic flux corresponding to a magnetic field generated by a first coil to pass. A second magnetic layer for flux concentration is connected to the upper yoke layer at a location away from the medium facing surface, and allows a magnetic flux corresponding to a magnetic field generated by a second coil to pass. When seen in the direction orthogonal to the interface between the second magnetic layer and the upper yoke layer, this interface is disposed at a location that does not coincide with the interface between the first magnetic layer and the pole layer.