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. 24, 2015
Filed:
Nov. 11, 2012
Bayer Intellectual Property Gmbh, Monheim, DE;
Marc-Stephan Weiser, Leverkusen, DE;
Daniel Hentschel, Köln, DE;
Joachim Petzoldt, Monheim, DE;
Pantea Nazaran, Köln, DE;
Sebastian Dörr, Düsseldorf, DE;
Dirk Dijkstra, Köln, DE;
Ute Flemm, Solingen, DE;
Dennis Hönel, Zülpich-Wichterich, DE;
Friedrich-Karl Bruder, Krefeld, DE;
Thomas Fäcke, Leverkusen, DE;
Thomas Rölle, Leverkusen, DE;
Bayer Intellectual Property GmbH, Monheim, DE;
Abstract
This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.