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:
Mar. 13, 2007
Filed:
Mar. 30, 2001
Sumihito Morita, Niigata-ken, JP;
Naruaki Oki, Niigata-ken, JP;
Hisayuki Yazawa, Niigata-ken, JP;
Minoru Yamada, Niigata-ken, JP;
Sumihito Morita, Niigata-ken, JP;
Naruaki Oki, Niigata-ken, JP;
Hisayuki Yazawa, Niigata-ken, JP;
Minoru Yamada, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
In a thin-film magnetic head, a lower magnetic pole layer and a planarizing magnetic layer in continuity with the lower magnetic layer are arranged. Since a coil formation surface is positioned lower than the top surface of the lower magnetic pole layer and the planarizing magnetic layer, the front end of an upper magnetic core layer is formed to be a predetermined track width with a high accuracy. A thin-film magnetic head having good information writing characteristics and a method for manufacturing the thin-film magnetic head are thus provided.