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:
Jul. 04, 2000
Filed:
Feb. 02, 1998
George K Phillips, Paso Robles, CA (US);
Verify First Technologies, Inc., Paso Robles, CA (US);
Abstract
A counterfeit-resistant document comprises a validation mark with a unique chemical signature that identifies the source of the document. The source of the document can be identified by detecting the unique chemical signature on the validation mark of the document, thus verifying the authenticity of the document. The unique chemical signature is applied to the document as ink, so that the validation mark provides information. The validation mark is latent in that the color of the coating matches that of the document, but the directional reflective properties of ink is more uniform than that of the document. In this manner, the letters cannot be readily ascertained by viewing them at an angle perpendicular to the surface of the document, but can be readily ascertained by viewing them at an angle different from that perpendicular to the surface of the document.