Time-temperature indicating device
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United States of America Patent
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Sep 18, 2012
Grant Date -
Aug 7, 2008
app pub date -
Oct 31, 2005
filing date -
Nov 8, 2004
priority date (Note) -
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Abstract
The present invention is generally in the field of measuring and indicating techniques and relates to a time-temperature indicating device and methods of manufacturing and reading this device. More specifically, the time-temperature indicator (TTI) device comprises at least one active reactant being at least a part of a component that is configured to be either an electrical component or transformable into an electrical component, said at least one active reactant being selected to be affectable by a chemical and/or physical reaction effecting a change in at least an electrical property of said electrical component at a rate that is time-temperature dependent.
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