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:
Nov. 27, 2007
Filed:
Jun. 14, 2000
Frank Puttkammer, Coswig, DE;
Frank Puttkammer, Coswig, DE;
WHD Elektronische Prueftechnik GmbH, Dresden, DE;
Abstract
The invention relates to an optically variable security attribute for documents, securities, bank notes, packaging and goods. The task of the invention is to provide an optically variable security attribute with covert detectable characteristics to improve safety against counterfeiting. In accordance with the invention, the task is accomplished in an optically variable security attribute with diffractive structures consisting of an electrically conductive polymer and at least one support web (), a protection layer (), a lacquer layer () and a reflection layer () by the electrically conductive polymer being polyethylenedioxythiophene polystyrenesulfunate (PEDT/PSS).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile