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. 24, 2013
Filed:
Aug. 03, 2011
Applicants:
Loïc Le Garrec, Vitre, FR;
Agnès Duval, Vitre, FR;
Inventors:
Loïc Le Garrec, Vitre, FR;
Agnès Duval, Vitre, FR;
Assignee:
Oberthur Technologies, Levallois Perret, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 19/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
This circuit () comprises a first antenna () connected to the microcircuit () and capable of supplying power to the microcircuit () by electromagnetic coupling with an external terminal and a second antenna () electromagnetically coupled to the first antenna () while remaining electrically isolated from the latter. In addition, the first () and second () antennas consist respectively of first and second windings having opposite winding directions as defined from the same observation point.