06103351 is referenced by 40 patents and cites 23 patents.

Time and temperature integrating devices for providing a visually observable indication of cumulative thermal exposure are disclosed comprising (a) a substrate having thereon a thermally sensitive image-forming area comprising a combination of (i) an organic silver salt oxidizing agent and (ii) a reducing agent for the organic silver salt oxidizing agent, and (b) indicating indicia in association with the image forming area for indicating when the device has been exposed to a predetermined cumulative thermal exposure. In accordance with further embodiments of the invention, a process of applying such a device to a perishable product, and a perishable product having such a device applied directly thereto or to packaging thereof, are also disclosed. Time-temperature indicators in accordance with the invention undergo readily detectable changes can be easily optimized to match various rates of time-temperature dependent cumulative changes desired to be monitored for various products.

Title
Time and temperature integrating indicator device
Application Number
987662
Publication Number
6103351
Application Date
March 30, 1998
Publication Date
August 15, 2000
Inventor
Thomas D Weaver
Rochester
NY, US
Peter J Cowdery Corvan
Webster
NY, US
Kathleen R Gisser
Pittsford
NY, US
Joseph A Manico
Rochester
NY, US
Arunachalam T Ram
Rochester
NY, US
Agent
Andrew J Anderson
Assignee
Eastman Kodak Company
NY, US
IPC
B32B 27/14
B32B 3/00
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