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:
Mar. 31, 2009
Filed:
Apr. 08, 2004
Haymo Katschorek, Obermichelbach, DE;
Mathias Seitz, Buckenhof, DE;
Haymo Katschorek, Obermichelbach, DE;
Mathias Seitz, Buckenhof, DE;
Leonhard Kurz GmbH & Co. KG, Furth, DE;
Abstract
The invention concerns a film, in particular an embossing film, a laminating film or a sticker film, and an optical security element. The film has a carrier layer and a replication layer. The film also has a layer of a liquid crystal material, which is applied to the replication layer. A diffractive structure is embossed into the surface of the replication layer, which is towards the layer of a liquid crystal material, for orientation of the liquid crystal material, said diffractive structure having at least two partial regions with different directions of orientation of the embossed structure.