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. 29, 2013
Filed:
Apr. 17, 2012
Katsuya Kanakubo, Tokyo, JP;
Kenji Senga, Tokyo, JP;
Katsuya Kanakubo, Tokyo, JP;
Kenji Senga, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A wafer for a magnetic head includes a magnetic pole which has a design capable of avoiding pole missing due to processing with an improved resistance to the processing during a magnetic pole forming process. Each magnetic head element provided in the wafer has a recording magnetic pole film. The magnetic pole film has a large width part, a small width part and a support part. The small width part projects continuously from the large width part and extends with a constant width W, while the support part is continuous with an end of the small width part and has a width W. The width Wand the width Wsatisfy the relationship of 1<W/W<2.