OPTICALLY VARIABLE SECURITY DEVICES
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Mar 29, 2012
app pub date -
Sep 30, 2011
filing date -
Jul 8, 1999
priority date (Note) -
Abandoned
status (Latency Note)
Importance
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Abstract
An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 7 Citation Count
- G02B Class
- 4.33 % this patent is cited more than
- 13 Age