Witness material and method for monitoring the environmental history of an object
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United States of America Patent
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May 15, 2018
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app pub date -
Apr 23, 2014
filing date -
Apr 23, 2014
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Abstract
A witness material for monitoring an environmental history of an object may include a material containing a dye of a type that fluoresces in response to actinic radiation in one or both of a shift in color and a change in intensity when subjected to a predetermined stress above a predetermined level; and the material forming a coating on one or more of an outer container for the object, an inner container for the object, a tape that is applied to an outer container for the object, a tape that is applied to an inner container for the object, a shrink wrap enclosing the object, an outer surface of the object, and an inner surface of the object.
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