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:
Jul. 27, 2004
Filed:
Mar. 08, 2001
Kiyoshi Sato, Niigata-ken, JP;
Toshinori Watanabe, Niigata-ken, JP;
Hideki Gochou, Niigata-ken, JP;
Kiyoshi Kobayashi, Niigata-ken, JP;
Toru Takahashi, Niigata-ken, JP;
Hisayuki Yazawa, Niigata-ken, JP;
Masaki Ikegami, late of Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
In a thin film magnetic head, a face surface faces a recording medium and a front surface of an upper core layer is a curved surface which gradually retreats in a height direction generally perpendicular to the face surface as it approaches both sides thereof, and the thickness of the upper core layer gradually increases in the height direction. It is thus possible to appropriately suppress the occurrence of side fringing, efficiently cause a magnetic flux to flow from the upper core layer to an upper pole layer, and make the thin film magnetic head adaptable to a higher recording density.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile