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:
Jul. 11, 2006
Filed:
Aug. 01, 2003
Sumihito Morita, Niigata-ken, JP;
Naruaki Oki, Niigata-ken, JP;
Toshinori Watanabe, Niigata-ken, JP;
Hiroko Shinozaki, Niigata-ken, JP;
Sumihito Morita, Niigata-ken, JP;
Naruaki Oki, Niigata-ken, JP;
Toshinori Watanabe, Niigata-ken, JP;
Hiroko Shinozaki, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magnetic flux partially leaks from a tip region of an upper core layer to the bottom pole layer through the partial insulating layer to effectively suppress magnetic saturation of the tip region, thereby improving the NLTS characteristic and PW50 characteristic, and suppressing the occurrence of side fringing.