Plural intrinsic expiration initiation application indicators

Details Plural intrinsic expiration initiation application indicators Plural intrinsic expiration initiation application indicators

2004-07-16

2009-10-06

Alexander, Lyle A (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

C436S002000, C436S007000, C426S088000

Reexamination Certificate

active

07597844

ABSTRACT:
A device for monitoring the expiration of goods includes a substrate and an unreacted composition affixed thereto which is intrinsically reactive to one or both of its thermal environment and the length of time following activation. The reactivity results in a color formation of the composition with the color formation being a single color upon reaction to one of said thermal environment or length of time and multiple colors upon reaction to both. The device may be a label affixed to a container containing the goods to be monitored or may be printed directly on a container.

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Ribi, Hans O., U.S. Publication No. 20020034475, filed Jun. 25, 2001, entitled Ingestibles Possessing Intrinsic Color Change, 45 pages.

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