Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2005-09-27
2005-09-27
La, Anh V. (Department: 2636)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S584000, C702S130000
Reexamination Certificate
active
06950028
ABSTRACT:
This invention covers electronic time-temperature indicators with a visual output, and other devices and methods by which the thermal history of a material may be monitored, and the subsequent fitness for use of the tracked material may be quickly ascertained. In particular, the invention discloses a rapidly reprogrammable electronic time-temperature tag that may be easily customized with the thermal time-temperature stability profile of an arbitrary material, using electronic data transfer methods. Using this device, a single, low-cost, generic time-temperature tag may be mass-produced, and then subsequently programmed to mimic the stability characteristics of nearly any material of interest.
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