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US 2015/0102108 A1Published application
Magnetic Authenticity Feature
AssigneeUniversitaet Kassel
InventorsArno Ehresmann, Dieter Engel
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AssigneeUniversitaet Kassel
InventorsArno Ehresmann, Dieter Engel
Estimating the term…
The invention relates to a magnetic multilayer system (1) which is arranged on a substrate (6) which is made of a material from the group consisting of a plastic from the group of polymers, metal, metal alloy and paper and/or which is at least one element from the group consisting of a document and packaging. The invention further relates to packaging which comprises such a magnetic multilayer system (1). According to the invention, the multilayer system (1) is used for proving the authenticity of an object. Likewise according to the invention are a method for marking an object with a magnetic multilayer system for proving the authenticity of an object and a method for reading a magnetic multilayer system for proving the authenticity of an object.
A multilayer system (1), comprising a plurality of magnetic layers which are arranged one upon another and of which at least one layer is ferromagnetic and a ferromagnetic layer (2) has a large number of biased domains (5) with asymmetrical remagnetisation properties, the multilayer system being arranged on a substrate (6), wherein the substrate (6) is defined by at least one of the following:
5-7. (canceled)
11-12. (canceled)
A method for marking an object with a magnetic multilayer system for proving the authenticity of an object, comprising:
A method for reading a magnetic multilayer system (1) for proving the authenticity of an object, comprising:
Dependencies are inferred from the claim text.