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Thermal Indicators

  • US 20120236096A1
  • Filed: 12/08/2011
  • Published: 09/20/2012
  • Est. Priority Date: 03/01/2006
  • Status: Active Grant
First Claim
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1. A method of providing a time-temperature indicator label comprising:

  • providing a thermal media element including a thermally sensitive coating on a substrate, where said thermally sensitive coating changes color upon exposure to heat; and

    printing over said coating with an ink of substantially matching a color.

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