Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 22, 2011
Patent Application Number
11075364
Date Filed
March 8, 2005
Patent Primary Examiner
Patent abstract
The compositions, methods and systems of the invention provide nanocrystal taggants for unobtrusive monitoring of objects. Objects can be tagged with nanocrystal taggant compositions for detection of informative invisible emissions on illumination with appropriate excitation wavelengths. Authentication schemes are also provided that takes advantage of the unique emission and absorption characteristics of nanocrystals to create a unique spectral code that is far more difficult to decode and replicate than those previously employed.
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