Multilayer film indicator for determining the integrity or authenticity of an item and process for using same
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United States of America Patent
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Mar 10, 1992
Grant Date -
N/A
app pub date -
Apr 6, 1990
filing date -
Apr 6, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multilayer film indicator, mechanism and process for using the indicator for determining the integrity, authenticity, or conformance of an item to an original state, involving the measurement and comparison of the condition of the indicator to an identifiable original quality of the indicator. The identifiable original quality of the indicator is produced by the optical interactions of layers of diverse thermoplastic materials within a laminate of the indicator and is not readily visible to the naked eye.
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