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Security document with luminescent transition metal doping

  • US 8,663,820 B2
  • Filed: 03/05/2002
  • Issued: 03/04/2014
  • Est. Priority Date: 03/08/2001
  • Status: Active Grant
First Claim
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1. A document of value having at least one authenticity feature in the form of a luminescent substance including a host lattice doped with at least one transition metal ion having an electron configuration of 3d2, said transition metal ion being a luminescence emitter.

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  • 2 Assignments
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