Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dawn E. Smith0
Yvonne Osunga0
Brian Huffman0
Carl M. Lentz0
Dene H. Taylor0
Date of Patent
February 28, 2012
Patent Application Number
12871034
Date Filed
August 30, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
A freeze indicator can include an indicator dispersion having an aqueous liquid medium and organic material indicator particles dispersed in the aqueous liquid medium. The indicator dispersion can have an initial appearance before freezing and an irreversibly different appearance after freezing and can exhibit a freeze-onset temperature of about −1.9° C. or higher. Some factors helpful to providing a relatively high freeze onset temperature are employment of a proteinaceous ice-nucleating agent, control of pH, use of a protein stabilizer and control of the ratio of protein stabilizer to ice-nucleating agent.
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