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.

Date of Patent:
Aug. 02, 2016

Filed:

Apr. 27, 2012
Applicants:

Anthony Joseph Peyton, Bolton, GB;

Wuliang Yin, Manchester, GB;

Stephen John Dickinson, Lancaster, GB;

Inventors:

Anthony Joseph Peyton, Bolton, GB;

Wuliang Yin, Manchester, GB;

Stephen John Dickinson, Lancaster, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 35/00 (2006.01); G01N 33/20 (2006.01); G01R 33/028 (2006.01); G01R 33/12 (2006.01);
U.S. Cl.
CPC ...
G01R 35/005 (2013.01); G01N 33/20 (2013.01); G01R 33/028 (2013.01); G01R 33/1223 (2013.01);
Abstract

Embodiments of the present invention provide an electromagnetic sensor () for detecting a microstructure of a metal target, comprising: a magnetic device () for providing an excitation magnetic field; a magnetometer () for detecting a resultant magnetic field induced in a metal target; and a calibration circuit () for generating a calibration magnetic field for calibrating the electromagnetic sensor, wherein the calibration reference magnetic field is generated by an electrical current induced in the calibration circuit by the excitation magnetic field.


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