Method for monitoring objects with transponders
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United States of America Patent
Stats
-
Mar 7, 2006
Grant Date -
Aug 7, 2003
app pub date -
May 2, 2001
filing date -
May 24, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There is provided a method for tracking environmental exposure of an object comprising selecting the object; associating a radiofrequency identifier with the object, the radiofrequency identifier comprising an antenna for transmitting or receiving radiofrequency energy; and an integrated circuit chip connecting with said antenna, said chip having a memory; exposing the object to an environmental condition; measuring environmental condition as an environmental parameter with a sensor physically separate from the radiofrequency identifier; and writing the environmental parameter to the memory of the chip by transmitting radiofrequency energy thereto.
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