Bayer Assigned Patent

Bayer Intellectual Property GmbH, Monheim, Germany, has been assigned a patent (9,195,215) developed by Weiser, Marc-Stephan, Leverkusen, Germany, Hentschel, Daniel, Koln, Germany, Petzoldt, Joachim, Monheim, Germany, Nazaran, Pantea, Koln, Germany, Dorr, Sebastian, Dusseldorf, Germany, Dijkstra, Dirk, Koln, Germany, Flemm, Ute, Solingen, Germany, Honel, Dennis, Zulpich-Wichterich, Germany, Bruder, Friedrich-Karl, Krefeld, Germany, Facke, Thomas, and Rolle, Thomas, Leverkusen, Germany, for a “holographic medium having a protective layer.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”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.“

The patent application was filed on November 11, 2012 (14/359,347).