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:
Jan. 27, 2015
Filed:
Dec. 23, 2010
Applicant:
Johannes Van Ek, Niwot, CO (US);
Inventor:
Johannes van Ek, Niwot, CO (US);
Assignee:
WD Media, LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/667 (2006.01);
U.S. Cl.
CPC ...
G11B 5/667 (2013.01);
Abstract
A perpendicular magnetic recording (PMR) media structure with multiple exchange couple composite (ECC) layer structure is described. The PMR disk structure may include multiple soft magnetic layers with intervening hard magnetic layers and in between. The interface between the soft magnetic layers and the hard magnetic layers may be separated by exchange coupled layers.