Temperature-sensitive packaging closures
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United States of America Patent
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Nov 10, 2015
Grant Date -
Sep 20, 2012
app pub date -
Oct 8, 2010
filing date -
Oct 13, 2009
priority date (Note) -
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Abstract
A device containing a temperature-sensitive material comprises a first part containing the material, a second part which engages the first part and allows, or can be disengaged or displaced to allow, the material to be dispensed or utilised, a locking means, and a temperature-sensitive activator for the locking means that is activated at a predetermined temperature, and thereby irreversibly prevents the material from being dispensed or utilised should it become frozen or exposed to temperatures below a predetermined limit.
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