Abstract: The present invention relates to a method for registering an object and for finding again a section of the object.

Abstract: The invention relates to a process for identifying and authenticating an object. The object includes an identifier which has a code region and a scattering region and is irradiated with electromagnetic radiation for identifying and/or authenticating the object, in such a manner that the electromagnetic radiation reflected by the code region is used for identifying the object and the electromagnetic radiation reflected by the scattering region is used for authenticating the object. In addition, the invention relates to a device for the parallel identification and authentication of an object.

Abstract: Position indicator which can be connected to an object and distinctly marks a designated region of a surface of the object such that said region can be clearly differentiated from other regions of the surface, and use of the position indicator for marking surfaces for the purpose of identification and/or authentication and to a method for detecting characteristic radiation

Abstract: The subject matter of the present invention is a method for identifying and/or authenticating objects with the aid of their surface nature. A further subject matter of the present invention is a sensor for scanning a surface.

Abstract: The invention relates to an optical sensor for identifying and/or authenticating objects on the basis of characteristic reflection patterns, and to a device comprising a plurality of sensors connected to one another.

Abstract: The invention relates to an optical sensor for detecting characteristic reflection patterns caused by randomly distributed and/or oriented microreflectors. The invention furthermore relates to the method od using a sensor according to the invention for identifying and/or authenticating objects.

Abstract: The invention relates to a process for identifying and authenticating an object. The object includes an identifier which has a code region and a scattering region and is irradiated with electromagnetic radiation for identifying and/or authenticating the object, in such a manner that the electromagnetic radiation reflected by the code region is used for identifying the object and the electromagnetic radiation reflected by the scattering region is used for authenticating the object.

Abstract: The invention relates to optical security elements, their use for identifying and authenticating objects and processes and devices for identifying and authenticating objects using the optical security elements.

Abstract: A security element for the identification and authentication of objects is disclosed. The element is connected by a self-adhesive label to an object. It has features that effectively prevent non-destructive detachment of the security element from an object. The security element has an optical code for identification. Furthermore, it is provided with random production-governed features by means of which authentication is made possible: upon irradiation with electromagnetic radiation, a scattering region of the security element brings about a characteristic scattering signal. The method of using the security element is disclosed for the identification and authentication of objects and also for protection against forgeries, and a method for the identification and authentication of objects on the basis of the security element.

Abstract: The present invention relates to a multi-stage membrane filtration process for reconcentrating the overspray from a one-component, aqueous coating composition containing high molecular weight components having a weight average molecular weight of at least 2000 and at least 5% by weight, based on the total weight of the organic components of the coating composition, of a low molecular weight component having a weight average molecular weight of less than 2000, that has been diluted with spray booth water from spray booths having wet flushing to form a booth/water overspray mixture bya) preconcentrating the booth water/overspray mixture in an ultrafiltration unit to obtain a first retentate containing high molecular weight components and a first permeant containing water and at least a portion of the low molecular weight components,b) treating said first permeant and the third permeant obtained in step c) below in a reverse osmosis unit to obtain a second permeant containing essentially pure water for recycle a