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:
Nov. 21, 2000
Filed:
Apr. 13, 1998
Applicant:
Inventors:
Koichi Terunuma, Hohya, JP;
Yasufumi Uno, Usudamachi, JP;
Tetsuya Mino, Hunabashi, JP;
Koji Matsukuma, Akashi, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360126 ; 360119 ; 360317 ;
Abstract
A first pole tip 212 at a write element 2 is provided projecting above a first yoke 211. A second pole tip 222 is adhered onto a gap film 23 that is adhered onto the first pole tip 212. The front end portion of a second yoke 221 is laminated on the second pole tip 222. At least either the first pole tip 212 or the second pole tip 222 is constituted of a material having a higher saturation magnetic flux density than that of permalloy. At least either the first yoke 211 or the second yoke 221 is constituted of a material having a higher resistivity than that of permalloy.