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:
Apr. 16, 2013
Filed:
Dec. 14, 2009
Applicants:
Zhaohui Fan, Fremont, CA (US);
David Kuo, Palo Alto, CA (US);
Inventors:
Zhaohui Fan, Fremont, CA (US);
David Kuo, Palo Alto, CA (US);
Assignee:
Seagate Technology LLC, Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
A shallow trench discrete track media structure is fabricated by etching a magnetic recording layer to provide a plurality of discrete magnetic data tracks separated by shallow trenches. Each shallow trench has a trench floor formed at a depth in the magnetic recording layer that is less than the thickness of the magnetic recording layer. Exposed regions of the magnetic recording layer beneath the trench floor are reacted with reactive plasma to diminish the magnetic moment of the exposed regions.