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. 27, 2009
Filed:
Mar. 10, 2006
Yoshitaka Sasaki, Milpitas, CA (US);
Hiroyuki Itoh, Milpitas, CA (US);
Dong-hong LI, Milpitas, CA (US);
Joseph Smyth, Milpitas, CA (US);
Lijie Guan, Milpitas, CA (US);
Yaw-shing Tang, Saratoga, CA (US);
Yoshitaka Sasaki, Milpitas, CA (US);
Hiroyuki Itoh, Milpitas, CA (US);
Dong-Hong Li, Milpitas, CA (US);
Joseph Smyth, Milpitas, CA (US);
Lijie Guan, Milpitas, CA (US);
Yaw-Shing Tang, Saratoga, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field for writing data on a recording medium by using a perpendicular magnetic recording system. A shield incorporates: a first layer having an end face located in a region of the medium facing surface forward of the end face of the pole layer along the direction of travel of the recording medium; a second layer disposed in a region sandwiching the pole layer with the first layer; a first coupling portion coupling the first layer to the second layer without touching the pole layer; and a second coupling portion coupling the pole layer to the second layer and located farther from the medium facing surface than the first coupling portion.