C - Chemistry – Metallurgy – 12 – Q
Patent
C - Chemistry, Metallurgy
12
Q
150/16.2
C12Q 1/22 (2006.01) A61L 2/28 (2006.01) C12Q 1/02 (2006.01) G01K 3/04 (2006.01) G01N 31/22 (2006.01)
Patent
CA 1172946
Abstract A device for monitoring thermal energy input and displaying the relationship of the thermal energy input to a selected time/temperature relationship. The device employs an indicating material which, when melted, expands and flows into a narrow channel to provide an irreversible, visible indication of the thermal energy to which the device has been exposed.
395411
Hawkins Paul M.
Manske Wendell J.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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