Method and apparatus for identifying a product

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United States of America Patent

PATENT NO 9589227
APP PUB NO 20110095080A1
SERIAL NO

12735092

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Abstract

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The present invention relates to a method and a corresponding apparatus for identifying a product (1) or information relating to the product (1). In the method, a concealed code on the product (1) is identified, wherein the code is given by a set of ellipsometric parameters, and the method comprises the following steps of: measuring ellipsometric variables for at least one defined point (8) on a surface (9) of the product (1), comparing the measured ellipsometric variables with at least one reference code, and determining a match between the measured ellipsometric variables and the reference code or one of the reference codes or determining a mismatch with each reference code.

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Patent Owner(s)

Patent OwnerAddress
BAM BUNDESANSTALT FUER MATERIALFORSCHUNG UND-PRUEFUNGUNTER DEN EICHEN 87 BERLIN 12205

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beck, Uwe Falkensee, DE 8 14
Domnick, Ralph Buckenhof, DE 12 59
Hönig, Dirk Gottingen, DE 1 1
Hertwig, Andreas Berlin, DE 2 4

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