VHP VEILIGHEIDSPAPIERFABRIEK UGCHELEN B.V.

Patent application number	Title	Published
VHP VEILIGHEIDSPAPIERFABRIEK UGCHELEN B.V. Patent applications
20110290435	Method For Producing A Watermark Element, Watermark Element, And Also Applications - According to one aspect, the invention relates to a method for producing a watermark element (	12-01-2011
20080274474	Authentication Method and System for Authenticating Security Documents, Security Document and Security Element - An authentication system for authenticating security documents contains at least an enzyme and a substrate and any co-enzymes and/or co-factors needed, capable of an enzymatic conversion. This conversion leads to a detectable change. The security-document contains at least one of the enzyme and the substrate. According to the invention the genetic information for the enzyme is derived from an extremophilic micro-organism. A security document for use in the authentication system and method is also described.	11-06-2008