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US 2006/0131424 A1Published application
Article comprising an integrated marking tag and a mark-detection device
AssigneeMemscap
InventorsPhilippe Helin, Pascal Ransch
Life of this patent
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AssigneeMemscap
InventorsPhilippe Helin, Pascal Ransch
Estimating the term…
The invention relates to a marking device (1) comprising an element which is made from a semi-conductor material having patterns (2-4, 12-14) which are hollowed out of the face thereof, the arrangement of said patterns being representative of at least one piece of information. The depth of the patterns (2-4, 12-14) can vary from one pattern to another and can adopt a plurality of different values which are representative of an additional piece of information. The invention also relates to an apparatus which is used to detect such marks and to articles having a marking device of said type integrated into the material forming same.
An article comprising an integrated marking tag (1) on the surface of which patterns (2-4) are hollowed out, the layout of these patterns being representative of at least one information item, characterised in that the marking tag is embedded in the material that constitutes the article and in that it comprises variable-depth patterns, said depth (h2-h4) of patterns (2-4) being able to assume a plurality of different values that represent an additional information item.
Dependencies are inferred from the claim text.