Leuchtstoffwerk Breitungen Gmbh

Sensor-instruments Entwicklungs- Und Vertribes-gmbh

Sensor Instruments Entwicklungs- Und Vertriebs Gmbh

Gleitsmann Security Inks Gmbh

Thomas Bitzer

Roland Gutmann

Walter Braumandl

Sylke Rösler

Benedikt Daumann

Dominik Uhlich

Thomas Kaib

Katharina Huth

Frank Adrian Carl

A method for determining the authenticity of an object by marking the object with a first luminescent material with a first decay behavior over time, marking the object with a second luminescent material with a second decay behavior that differs from the first decay behavior, excitation of the luminescent materials with a light pulse, measuring the afterglow intensities of both luminescent materials temporally after the excitation with the light pulse, forming a difference signal or identity signal from the afterglow intensities measured over the elapsed time, determining the time of a zero crossing of the difference signal or the time of the identity signal of a comparator, comparing the time determined by the zero crossing or by the identity signal with a setpoint value.

Procedure for determining the authenticity of an object

A method for uniquely marking an object, wherein a random distribution of individual pigment domains is applied to a surface of the object, and wherein a list of distances of the individual pigment domains from one another is measured and stored in a database. Also a corresponding method for identifying an object by: capturing an image of the pigment domains, identifying the two-dimensional coordinates of each pigment domain captured in the image, determining the two-dimensional distance of each pair of two pigment domains and/or the angle of each triplet of pigment domains, storing the distances and/or angles determined in the step before in a list, storing the list in the database, the list enriched with meta-information about the manufacturing and/or finishing parameters of the object, applying a database identification as an information unit to the surface of the object, the information unit uniquely assignable to the database.

Method for uniquely marking objects

Growing community of inventors

Mönchengladbach, Germany

Thomas Bitzer