Temperature Alert Device for Cryopreservation
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United States of America Patent
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Issued Date -
May 14, 2009
app pub date -
Nov 10, 2008
filing date -
Nov 12, 2007
priority date (Note) -
Abandoned
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Abstract
A temperature alert device to warn of imminent devitrification due to warming of a biological specimen that uses shape memory materials. The temperature induced phase transformation of shape memory materials causes a temperature responsive actuator to extend an alert rod upon warming as the specimen temperature approaches the devitrification temperature (e.g. −130° C.). The temperature alert device is automatically reset upon immersion in liquid nitrogen.
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