Signals and indicators – Indicators – Temperature responsive or compensating means
Reexamination Certificate
2005-03-08
2009-12-08
Johnson, Amy Cohen (Department: 2841)
Signals and indicators
Indicators
Temperature responsive or compensating means
C016S201000, C374S052000
Reexamination Certificate
active
07628116
ABSTRACT:
A temperature sensing device includes two or more strips, wherein each of the two or more strips comprises a shape memory polymer adapted to undergo a change in a modulus of elasticity at a thermal transition temperature. A method comprises contacting two or more strips with an item, wherein each strip comprises a shape memory polymer adapted to undergo a change in a modulus of elasticity at a thermal transition temperature; equilibrating the two or more strips with the item; and determining a temperature range of the item by observing whether any of the two or more strips underwent a decrease in stiffness and/or increase in flexibility caused by the change in the modulus of elasticity of the shape memory polymer.
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Browne Alan L.
Johnson Nancy L.
Cohen Johnson Amy
GM Global Technology Operations Inc.
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