Thermal measuring and testing – Temperature measurement – Composite temperature-related paramenter
Patent
1980-10-14
1983-05-10
Kazenske, Edward R.
Thermal measuring and testing
Temperature measurement
Composite temperature-related paramenter
116216, 368327, 374161, 426 88, G01K 306
Patent
active
043827004
ABSTRACT:
An indicator attached to perishable goods to show the remaining useful life are described. The preferred embodiment described includes a material, as for example a mineral jelly, which is in contact with a wick, such as a paper strip, such that the mineral jelly diffuses into the paper in accordance with changes in ambient temperature over a period of time. The amount of diffusion is indicated by an apparent change in color of the paper and is analogous to a change in the useful characteristic of the perishable goods.
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Corr Denis E.
Kazenske Edward R.
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