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. 09, 2012
Filed:
Nov. 10, 2009
Tatsuhiro Nojima, Tokyo, JP;
Hisayoshi Watanabe, Tokyo, JP;
Masachika Hashino, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A method of manufacturing a perpendicular magnetic head having a writing element that writes magnetic information to a recording medium includes forming a main magnetic pole part generating a magnetic field on a substrate; removing at least a part of the substrate and a material existing at a circumference of the main magnetic pole part to expose an entire circumference of the main magnetic pole part at a surface that becomes an opposing medium surface (ABS) opposite to the recording medium; forming a shield gap film that is made of a nonmagnetic material so as to cover the entire circumference of the main magnetic pole part at least at the surface that becomes the ABS; and forming a shield layer so as to cover an entire circumference of the shield gap film at least at the surface that becomes the ABS.