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:
Mar. 12, 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 method of manufacturing a perpendicular magnetic recording head capable of easily and accurately forming a main magnetic-pole layer having a shape suitable for concentrating a magnetic flux is provided. A nonmagnetic layer having a recessed section (a first recessed section and a second recessed section) is formed, and then an additional nonmagnetic layer is formed on an inner surface of the recessed section. Then, a magnetic layer is formed in the recessed section formed with the additional nonmagnetic layer, and then the magnetic layer is cut to form an air bearing surface, so as to form the main magnetic-pole layer.