公开(公告)号：WO2022187433A1

公开(公告)日：2022-09-09

申请号：PCT/US2022/018626

申请日：2022-03-03

Applicant: TEMPTIME CORPORATION

Inventor： OLSON, John ,  LIBERATO, Eric, W. ,  ABDO, Mohannad ,  FELDMAN, Steven

IPC: G01N21/78 ,  G01K3/04 ,  G01K11/12 ,  G01N21/77 ,  G01N31/22

Abstract: A temperature exposure indicator includes a reservoir of meltable material having a melting point at an activation threshold of the temperature exposure indicator. The temperature exposure indicator also includes a light scattering material having voids and an indicia overlay ed by the light scattering material such that the indicia is initially obscured by the light scattering material prior to the meltable material being exposed to a temperature above the activation threshold. The reservoir is in fluid communication with the light scattering material, such that the meltable material, when exposed to a temperature at or above the activation threshold, is configured to melt and flow into the voids of the light scattering material thereby causing the light scattering material to transition from an obscuring form to a non-obscuring form so that the indicia is viewable through the light scattering material.