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PACIFIC HOLOGRAPHICS INC
US5 patents
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US6552830B2Apr 22, 2003
Holographic authentication element and document having holographic authentication element formed thereupon
PACIFIC HOLOGRAPHICS INC36 citations95
US6222650B1Apr 24, 2001
Holographic authentication element and document having holographic authentication element formed thereon
PACIFIC HOLOGRAPHICS INC80 citations95
US5986781ANov 16, 1999
Apparatus and method for generating diffractive element using liquid crystal display
PACIFIC HOLOGRAPHICS INC65 citations95
US6865001B2Mar 8, 2005
System and method for encoding and decoding an image or document and document encoded thereby
PACIFIC HOLOGRAPHICS INC90 citations93
US6806983B2Oct 19, 2004
Apparatus and method for generating diffractive element using liquid crystal display
PACIFIC HOLOGRAPHICS INC10 citations73