US 12,270,712 B2
Temperature indicator with electrochemical switch
Brian Huffman, Belle Mead, NJ (US); Thi N. Do, West Orange, NJ (US); Ravi Bhatia, Cedar Knolls, NJ (US); Mohannad Abdo, Clifton, NJ (US); and Thaddeus Prusik, Stroudsburg, PA (US)
Assigned to TEMPTIME CORPORATION, Morris Plains, NJ (US)
Appl. No. 17/610,949
Filed by Temptime Corporation, Morris Plains, NJ (US)
PCT Filed May 11, 2020, PCT No. PCT/US2020/032340
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/231921, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/847,018, filed on May 13, 2019.
Prior Publication US 2022/0252464 A1, Aug. 11, 2022
Int. Cl. G01K 11/06 (2006.01); G01K 1/024 (2021.01)
CPC G01K 11/06 (2013.01) [G01K 1/024 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A temperature-activatable temperature indicator comprising:
a substrate; and
an indicator material supported by the substrate, the indicator material comprising a mixture of a side-chain crystalline polymer and conductive particles, wherein the side chain crystalline polymer melts in response to exposure to a temperature above a threshold, and the indicator material undergoes a change in electrical conductivity in response the side-chain crystalline polymer melting.