Time and/or Temperature Sensitive Devices and Methods of Use Thereof
AssigneeFreshpoint Quality Assurance Ltd.
InventorHusein SALMAN
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Abstract
An apparatus, system and method for a time temperature indicator (TTI) which is capable of providing a summary of the time and temperature history of a good to which it is coupled, optionally including with regard to providing an indication as to whether one or more temperature thresholds have been breached. According to other embodiments, the TTI specifically provides an indication as to whether a temperature threshold at or around the freeze point has been breached, optionally even without providing a time and temperature history.
Claims9
A time-temperature indicator comprising a multi-layer system having a metal layer on a polymeric substrate, an etchant layer comprising an etchant that etches the metal layer when in contact therewith, the etchant layer being configured to be disposing on the side of the metal layer opposite the substrate, and a light-diffusive layer being disposed atop the etchant layer opposite the metal layer.
Dependencies are inferred from the claim text.