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US 2010/0245044 A1Published application
Security structure comprising a thermochromic element and a photochromic element
AssigneeArjowiggins Security
InventorPhilippe Dietemann
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Abstract
The present invention provides a security structure comprising: at least one photochromic layer presenting at least one photochromic zone including at least one photochromic element; and at least one thermochromic layer presenting at least one thermochromic zone including a thermochromic element, covering the photochromic zone at least in part.
Claims17
1-16. (canceled)
A security structure comprising:
- at least one photochromic layer presenting at least one photochromic zone including at least one photochromic element;
- and
- at least one thermochromic layer presenting at least one thermochromic zone including a thermochromic element, covering the photochromic zone at least in part.
Dependencies are inferred from the claim text.