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:
Jun. 27, 2017
Filed:
Dec. 22, 2015
Applicant:
Xerox Corporation, Norwalk, CT (US);
Inventors:
George A. Gibson, Fairport, NY (US);
James R. Larson, Fairport, NY (US);
Assignee:
XEROX CORPORATION, Norwalk, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 19/00 (2006.01); G06Q 10/08 (2012.01); G06K 19/07 (2006.01);
U.S. Cl.
CPC ...
G06Q 10/087 (2013.01); G06K 19/0723 (2013.01);
Abstract
A chipless RFID transponder is disclosed. The transponder comprises an antenna and a plurality of resonant structures that together define a spectral signature of the RFID transponder. Each of the resonant structures comprises conductive portions separated by interstitial regions. A reversible photoconductive material is disposed in the interstitial regions of the resonant structures between the conductive portions. The photoconductive material is positioned so as to shift the spectral signature of the RFID when exposed to radiation.