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:
Apr. 13, 1999
Filed:
Oct. 24, 1997
Applicant:
Inventor:
Michiaki Kanamine, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360126 ; 360119 ; 2960316 ;
Abstract
A recess with a slanted wall is provided on a substrate, a magnetic yoke layer is formed so that the end of the magnetic yoke layer covers the slanted wall, and the recess is filled with a filling layer. Flat working is performed until a portion of the substrate is removed so that the magnetic yoke layer appears on the flat worked surface of the substrate, and the width of the magnetic yoke layer appearing on the top flat surface is almost determined by the thickness of the magnetic yoke layer, which defines the width of a core of a magnetic head. Thus, a narrow core width of a magnetic head is provided.