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:
Jan. 07, 2014
Filed:
Feb. 15, 2008
Sameer Hemmady, Thousand Oaks, CA (US);
Steven M. Anlage, Laurel, MD (US);
Sameer Hemmady, Thousand Oaks, CA (US);
Steven M. Anlage, Laurel, MD (US);
University of Maryland, College Park, College Park, MD (US);
Abstract
The present invention exploits extreme sensitivity to initial conditions in ray-chaotic enclosures to create a method to distinguish nominally identical objects through their unique 'wave fingerprints.' The fingerprint can be measured through transmission of a pulsed microwave signal as a function of carrier frequency and time. When internal components are re-arranged, the Electromagnetic Fingerprints (EMF) changes in significant ways. The EMF can be detected by direct injection measurements of the enclosure or through remote measurement.