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Temperature monitoring system

  • US 20050254551A1
  • Filed: 05/11/2004
  • Published: 11/17/2005
  • Est. Priority Date: 05/11/2004
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a circuit board; and

    a thermochromic coating covering at least a portion of the circuit board, wherein the thermochromic coating indicates areas of increased temperature on the circuit board; and

    wherein the thermochromic coating comprises a color forming leuco dye; and

    an activator having at least one acid group.

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