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. 21, 1997
Filed:
Nov. 17, 1994
Yoram Curiel, Aurora, CO (US);
Optical Security Group, Inc., Denver, CO (US);
Abstract
A method of protecting an informational article, on which variable information is inserted, from photocopy duplication and alteration. The method comprises providing an informational article substrate having a zone for inserting the variable information and a refractive image disposed within the zone. The variable information is inserted in the zone, and transparent tape is secured over the variable information. The transparent tape has a write-resistant exposed surface. The refractive image will resist photocopy duplication of the variable information article, and the write-resistant exposed surface will resist alteration of the inserted variable information.