Anti-counterfeiting device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jul 10, 2003
app pub date -
Nov 7, 2002
filing date -
Jan 17, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An anti-counterfeiting device for application to or association with consumer goods to give an indication of authenticity comprises: a substrate (10); a latent image (11) formed on the substrate that becomes visible upon exposure to oxygen; an oxygen-impermeable layer (12) covering the latent image, and means to break the oxygen-impermeable layer. The latent image is preferably formed by printing an oxygen-sensitive colouring material on to the substrate.
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