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:
Jun. 09, 2009
Filed:
Apr. 27, 2005
Hiroshi Kameda, Tokyo, JP;
Eiji Ozaki, Tokyo, JP;
Hiroshi Kameda, Tokyo, JP;
Eiji Ozaki, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetic head and a manufacturing method thereof which can suppress side fringing and permeation of a recording magnetic field in the first direction while maintaining the intensity of a recording magnetic field. By making a length of a trailing upper surface of a front portion in a height direction longer than a length of a leading lower surface of the front portion in the height direction, a generated magnetic field of the trailing upper surface can be comparatively weakened, to suppress side fringing and magnetic field permeation of a recording magnetic field. The recording magnetic field can be kept large enough by shortening the length of the leading lower surface in the height direction to intensify a generated magnetic field generated from the leading side.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile