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:
Jan. 23, 2001
Filed:
May. 21, 1998
Applicant:
Inventors:
Koichi Terunuma, Tokyo, JP;
Yasufumi Uno, Nagano, JP;
Tetsuya Mino, Chiba, JP;
Koji Matsukuma, Hyogo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/33 ; G11B 5/31 ;
U.S. Cl.
CPC ...
G11B 5/33 ; G11B 5/31 ;
Abstract
A thin film magnetic head has a recording gap layer made of a nonmagnetic material, lower and upper magnetic pole layers made of a magnetic material, the lower and upper magnetic pole layers sandwiching the recording gap layer, and a magnetic material side layer deposited via a nonmagnetic material side layer on at least a part of a side surface of at least the upper magnetic pole layer.