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:
Jan. 15, 2013
Filed:
Jun. 30, 2010
Tetsuya Mino, Hong Kong, CN;
Naoto Matono, Hong Kong, CN;
Ikuhito Onodera, Hong Kong, CN;
Kazushi Nishiyama, Hong Kong, CN;
Michitoshi Tsuchiya, Hong Kong, CN;
Kenji Sasaki, Hong Kong, CN;
Tetsuya Mino, Hong Kong, CN;
Naoto Matono, Hong Kong, CN;
Ikuhito Onodera, Hong Kong, CN;
Kazushi Nishiyama, Hong Kong, CN;
Michitoshi Tsuchiya, Hong Kong, CN;
Kenji Sasaki, Hong Kong, CN;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
A perpendicular magnetic write head includes: a magnetic pole; a pair of nonmagnetic side gap layers provided on both sides in a track-width direction of the magnetic pole; a nonmagnetic trailing gap layer provided on a trailing side of the magnetic pole; a magnetic shield layer so provided as to surround the magnetic pole with both of the nonmagnetic side gap layer and the nonmagnetic trailing gap layer in between; and a magnetic seed layer formed between the nonmagnetic trailing gap layer and the magnetic shield layer, and having a saturation magnetic flux density higher than that of the magnetic shield layer. The magnetic seed layer is not formed between the nonmagnetic side gap layer and the magnetic shield layer.