Emulsion products and imagery employing steganography
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United States of America Patent
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Nov 22, 2005
Issued Date -
N/A
app pub date -
Mar 19, 2002
filing date -
Mar 17, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Images are steganographically marked with codes that can be used, e.g., by reference to a remote registry, to identify the image proprietors. Some embodiments pre-mark blank emulsion film or paper products with such codes, so that images formed thereon can be traced back to their proprietors. A variety of other embodiments and technologies are also disclosed.
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