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:
Sep. 28, 2010
Filed:
Dec. 26, 2006
Tsung Yuan Chen, San Jose, CA (US);
Hung-chin Guthrie, Saratoga, CA (US);
Yimin Hsu, Sunnyvale, CA (US);
Ming Jiang, San Jose, CA (US);
Tsung Yuan Chen, San Jose, CA (US);
Hung-Chin Guthrie, Saratoga, CA (US);
Yimin Hsu, Sunnyvale, CA (US);
Ming Jiang, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
In a perpendicular recording head, a notch is formed in the top write gap at a location on top of the main pole. A perpendicular head with this notched top write gap structure has less transition curvature and better writability while reducing the adjacent track interference (ATI). Also, the process used to fabricate the head ensures that the trailing edge (writing edge) of the main pole is extremely flat with no corner rounding.