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:
Dec. 16, 2003
Filed:
Mar. 27, 2001
Applicant:
Inventors:
Kenichi Miyazawa, Shizuoka-ken, JP;
Shuichi Sawada, Shizuoka-ken, JP;
Yukio Wakui, Shizuoka-ken, JP;
Assignee:
Yamaha Corporation, Shizuoka-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/127 ;
U.S. Cl.
CPC ...
G11B 5/127 ;
Abstract
By constituting a MR head with a pair of magnet films defining a recess on a lower gap layer, the recess having generally an inverted trapezoid shape in cross section; a magnetoresistive film covering a bottom and side wall of the recess and partial upper surfaces of the pair of magnet films; and a pair of electrically conductive films formed on the magnet films and being in contact with said magnetoresistive film only at a position outside of the recess, it becomes possible to reduce a variation in reading track widths of MR heads even under mass production.