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:
Oct. 15, 2002
Filed:
Jun. 28, 2000
Koichi Terunuma, Chuo-Ku, JP;
Tetsuya Mino, Chuo-Ku, JP;
Katsuya Kanakubo, Chuo-Ku, JP;
Noriyuki Ito, Chuo-Ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
The invention provides a thin film magnetic head including a first pole portion having depressed portion that is formed therein. The depressed portion descends, backward within the first pole portion, at a first inclination angle &thgr; from a first inclination starting point P . Then, an insulating film is filled up in the depressed portion so that it can be located up to the upper side of the surface of the first pole and have an inclined surface in the side of a medium opposing surface. Additionally, a first magnetic film of a second pole portion can have a larger saturated magnetic flux density than a second magnetic film of the second pole portion, and can include an inclined portion with a second inclination angle &thgr; from a second inclination starting point P