Thermochromic ink indicia for activatable quality labels
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United States of America Patent
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Oct 10, 2023
Grant Date -
N/A
app pub date -
Jun 28, 2021
filing date -
May 18, 2015
priority date (Note) -
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Abstract
An activatable quality label operative to provide an indication of exceedance of a temperature threshold following activation thereof at a temperature less than or equal to an activation temperature, including a readable indicator located on the quality label and operative, following activation of the quality label at or below the activation temperature, to readably indicate exceedance of the temperature threshold, an actuator element operative to activate the quality label and indicia at least partially formed by thermochromic ink, the thermochromic ink having a first visual appearance at temperatures less than or equal to the activation temperature and a second visual appearance at temperatures above the activation temperature, such that a visual appearance of the indicia is indicative of whether the quality label is at a temperature less than or equal to the activation temperature and hence may be activated.
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