Methods for identification and verification
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 31, 2002
Grant Date -
Jul 25, 2002
app pub date -
Jan 19, 2001
filing date -
Jan 19, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Secure documents and methods and apparatus for making the same. The documents are made secure using apparatus and methods in which one or more taggants are placed in the paper or ink of the document. The present or absence of the taggant within the document is detected by x-ray fluorescence analysis, thereby identifying or verifying the document.
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Cited Art Landscape
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