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. 15, 2014
Filed:
Dec. 19, 2012
Hgst Netherlands B.v., Amsterdam, NL;
Wen-Chien D. Hsiao, San Jose, CA (US);
Quan-chiu H. Lam, San Jose, CA (US);
Terence T. L. Lam, Cupertino, CA (US);
Aron Pentek, San Jose, CA (US);
Yi Zheng, San Ramon, CA (US);
Yuming Zhou, Lakeville, MN (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic write head having a write pole and a trailing, wrap-around magnetic shield formed over the write pole and separated from the write pole by a non-magnetic trailing gap layer and non-magnetic side gap layers. The write head includes a remnant magnetic seed layer, that while being used to facilitate electroplating of the magnetic shield, is left intentionally extending beyond the back edge of the magnetic shield. This extended portion of the magnetic seed layer acts as a shunt for magnetic flux and prevents data erasure due to over-writing.