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. 20, 2016
Filed:
Nov. 06, 2014
Applicant:
Wd Media, Llc, San Jose, CA (US);
Inventors:
Shahid Pirzada, Fremont, CA (US);
Tomoko Seki, Sunnyvale, CA (US);
B. Ramamurthy Acharya, Fremont, CA (US);
Antony Ajan, Santa Clara, CA (US);
Assignee:
WD Media, LLC, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 11/00 (2006.01); G11B 5/84 (2006.01); G11B 5/64 (2006.01); G11B 5/73 (2006.01); G11B 5/48 (2006.01); G11B 5/00 (2006.01); G11B 5/31 (2006.01); G11B 11/105 (2006.01);
U.S. Cl.
CPC ...
G11B 5/84 (2013.01); G11B 5/4866 (2013.01); G11B 5/647 (2013.01); G11B 5/732 (2013.01); G11B 5/314 (2013.01); G11B 11/10584 (2013.01); G11B 2005/0021 (2013.01);
Abstract
A recording medium having improved signal-to-noise ratio (SNR) capabilities and head-disk interface characteristics includes an etched smoothened underlayer, over which the recording layer is grown. One mechanism for increasing the SNR is by growing more columnar magnetic grain structures within the recording layer, which is facilitated by a smoother underlayer template.