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:
May. 01, 2007
Filed:
Apr. 26, 2004
Wen-chien David Hsiao, San Jose, CA (US);
Wipul Pemsiri Jayaekara, Los Gatos, CA (US);
Edward Hin Pong Lee, San Jose, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Patrick Rush Webb, Los Gatos, CA (US);
Sue Siyang Zhang, Saratoga, CA (US);
Wen-Chien David Hsiao, San Jose, CA (US);
Wipul Pemsiri Jayaekara, Los Gatos, CA (US);
Edward Hin Pong Lee, San Jose, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Patrick Rush Webb, Los Gatos, CA (US);
Sue Siyang Zhang, Saratoga, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A magnetoresistive read/write head having a first layer of alumina and a second layer of silicon dioxide overlaying a P3 layer of the head. In a preferred embodiment, the silicon dioxide layer is recessed away from an Air Bearing Surface (ABS) to reduce protrusion of a P2 layer and the P3 layer in the head, and to reduce degradation in the magnetic properties of the pole tips of the P2 and P3 layer ends.