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:
Jun. 18, 2013
Filed:
Dec. 01, 2006
LI Tang, Fremont, CA (US);
Weilu Xu, San Jose, CA (US);
Youfeng Zheng, San Jose, CA (US);
Shanghsien Rou, Fremont, CA (US);
Connie Chunling Liu, San Jose, CA (US);
Jianhua Xue, Maple Grove, MN (US);
Li-lien Lee, San Jose, CA (US);
Li Tang, Fremont, CA (US);
Weilu Xu, San Jose, CA (US);
Youfeng Zheng, San Jose, CA (US);
Shanghsien Rou, Fremont, CA (US);
Connie Chunling Liu, San Jose, CA (US);
Jianhua Xue, Maple Grove, MN (US);
Li-Lien Lee, San Jose, CA (US);
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A perpendicular magnetic recording medium comprises a non-magnetic substrate having a surface; and a plurality of overlying thin film layers forming a layer stack on the substrate surface, the layer stack including a magnetically hard perpendicular magnetic recording layer structure and an underlying soft magnetic underlayer (SUL), the SUL having a thickness of up to about 100 Å. Also disclosed is a data/information recording, storage, and retrieval system comprising the perpendicular magnetic recording medium and a single-pole magnetic transducer head including main and auxiliary poles positioned in spaced adjacency to an upper surface of the layer stack, the single-pole transducer head comprising a front shield adjacent the main pole.