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:
Oct. 11, 2011
Filed:
Jan. 09, 2009
Applicant:
Shehzaad Kaka, Pittsburgh, PA (US);
Inventor:
Shehzaad Kaka, Pittsburgh, PA (US);
Assignee:
Seagate Technology LLC, Scotts Valley, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/33 (2006.01); G11B 5/127 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus includes a current perpendicular to the plane sensing element, a DC current source connected to the sensing element, a microwave AC current source connected to supply AC current to the sensing element, and a detector for measuring a voltage representative of phase difference between the AC current and AC voltage across the multilayer structure when the sensing element is subjected to a magnetic field. A method for sensing a magnetic field is also provided.