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. 02, 2014
Filed:
May. 18, 2013
Headway Technologies, Inc., Milpitas, CA (US);
Glen Garfunkel, San Jose, CA (US);
David Hu, Los Altos, CA (US);
Moris Dovek, San Jose, CA (US);
Yan Wu, Cupertino, CA (US);
Joseph Smyth, Aptos, CA (US);
Min Li, Fremont, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A read head with two read sensors enables reading of a magnetically recorded medium of increased areal densities such as would be provided by two-dimensional magnetic recording. The two sensors, which may be formed in separate depositions, are arranged vertically relative to each other as top and bottom sensors, with a downtrack displacement between them that is less than 900 A and a crosstrack displacement that is less than 600 A. Their separate free layers are connected by four or three conducting leads and require no junctions for their connections. In one embodiment each sensor has separate top and bottom shields and leads. In another embodiment, there is a common shield and lead between the two sensors, but a separate top shield/lead for the top sensor and bottom shield/lead for the bottom sensor.