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:
Sep. 18, 2012
Filed:
Mar. 24, 2006
Applicants:
Tomohiro Okada, Kanagawa, JP;
Masafumi Mochizuki, Tokyo, JP;
Hisashi Kimura, Kanagawa, JP;
Wataru Kimura, Kanagawa, JP;
Inventors:
Tomohiro Okada, Kanagawa, JP;
Masafumi Mochizuki, Tokyo, JP;
Hisashi Kimura, Kanagawa, JP;
Wataru Kimura, Kanagawa, JP;
Assignee:
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/147 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments of the invention provide a perpendicular magnetic recording head that causes the difference between a physical track width and an effective track width to be small. Sides of a main pole are made concave with the concave vertex on each side located close to a trailing edge of the main pole.