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Gordhanbhai N Patel: Vapor permeation time-temperature indicator. Allied Chemical Corporation, Robert J North, Gerhard H Fuchs, March 25, 1980: US04195058 (37 worldwide citation)

An improved time-temperature indicator (t-T indicator) is described which is useful for monitoring the shelf lives of various perishable articles. The device is constructed of a vapor-permeable barrier positioned between a vapor and a liquid indicator, both housed in a vapor-impermeable container. T ...


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Gordhanbhai N Patel: Vapor permeation time-temperature indicator. Allied Chemical Corporation, Robert J North, Gerhard H Fuchs, March 25, 1980: US04195056 (34 worldwide citation)

A time-temperature indicator (t-T indicator) is described which is useful for monitoring the shelf lives of various perishable articles. The device is constructed of a vapor-permeable barrier positioned between a vapor and an indicator, both housed in a vapor-impermeable container. The device is act ...


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Patel Gordhanbhai N: Indicateur temps-temperature par la permeabilite a la vapeur, Vapor permeation time-temperature indicator. Allied Corporation, GOWLING LAFLEUR HENDERSON, April 6, 1982: CA1121255 (2 worldwide citation)

ABSTRACT VAPOR PERMEATION TIME-TEMPERATURE INDICATOR A time-temperature indicator (t-T indicator) isdescribed which is useful for monitoring the shelf livesof various perishable articles. The device is constructedof a vapor-permeable barrier positioned between a vaporand an indicator, both housed in ...