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:
Dec. 23, 1986
Filed:
Aug. 25, 1983
M Duane Sanner, Irvine, TX (US);
Light Signatures, Inc., Los Angeles, CA (US);
Abstract
A system is disclosed including an authentication device as in the form of a document that is difficult to counterfeit and is individually identifiable. A sheet of medium comprising the document incorporates a section with a characteristic that specifically identifies the document as, for example, a section of varying translucency which will modulate a beam of light. Elements of such character identify the document as an individual unit. A visible mark or reference indicia on the document specifies the section of the document that serves to provide the characteristic identification. The visible mark is magnetic and records specific locations in the section and data on the document characteristic at such locations. An associated system is disclosed for producing and testing authenticator devices whereby the characteristic is sensed initially to be magnetically recorded in the mark and subsequently to be compared with the magnetically recorded data.