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:
Dec. 01, 2009
Filed:
Apr. 21, 2006
Applicant:
Taeyong Yoon, San Jose, CA (US);
Inventor:
Taeyong Yoon, San Jose, CA (US);
Assignee:
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 47/001 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bulk erase tool for erasing perpendicularly recorded media is provided. The bulk erase tool includes a first polarity erase magnet and a second polarity erase magnet offset from the first polarity erase magnet. In so doing, the offset between the first polarity erase magnet and the second polarity erase magnet produces a non-parallel non-vertical applied field utilized for erasing perpendicularly recorded media.