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. 05, 2010
Filed:
Sep. 11, 2006
Applicants:
Hisayuki Yazawa, Niigata-ken, JP;
Toshinori Watanabe, Niigata-ken, JP;
Inventors:
Hisayuki Yazawa, Niigata-ken, JP;
Toshinori Watanabe, Niigata-ken, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/187 (2006.01); G11B 5/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetic recording head and a method of manufacturing the magnetic recording head are provided. The perpendicular magnetic recording head includes a main magnetic pole layer and a return path layer that face each other with a gap therebetween in a lamination direction. A non-magnetic insulating layer is interposed between the main magnetic pole layer and the return path layer. At least one stepped portion is formed on a facing surface of at least one of the main magnetic pole layer and the return path layer.