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:
May. 28, 1996
Filed:
Apr. 11, 1994
Applicant:
Inventor:
George A May, Sooke, CA;
Assignee:
Doyle Argosy Innovators Ltd., Victoria, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G07D / ; G01R / ; G06K / ;
U.S. Cl.
CPC ...
364483 ; 34082534 ; 340691 ; 235488 ; 235380 ;
Abstract
The present invention provides a method of authenticating objects, comprising embedding a unique plurality of randomly-located, irregularly shaped, non-interconnected, electrically conductive regions within the surface of said object to thereby provide a unique electrically readable signature correlated to the genuine document; providing a unique identifier on the object; providing means for electrically reading said unique signature and digitally storing the signature in connection with the unique identifier for that object, and when an object is to be authenticated, obtaining a digitized record of the signature and comparing it to the stored signature.