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US Patent 7682830 Product shelf life monitoring systems

Patent 7682830 was granted and assigned to Temptime Corporation on March, 2010 by the United States Patent and Trademark Office.

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Is a
Patent
Patent
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Patent attributes

Current Assignee
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Temptime Corporation
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
76828301
Patent Inventor Names
Allan P. Piechowski1
Thaddeus Prusik1
Date of Patent
March 23, 2010
1
Patent Application Number
104576641
Date Filed
June 10, 2003
1
Patent Citations Received
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US Patent 11951761 Environmental history monitor with security features
2
Patent Primary Examiner
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Lyle A. Alexander
1
Patent abstract

A product shelf life monitoring system comprises a label substrate bearing upon a limited portion of its area an active indicator composition responsive to varying temperature over time to effect a visible change in color density or the like. The susceptibility of the indicator composition to similarly respond to incidence of vagrant ultraviolet light is ameliorated by application of an area of ultraviolet light absorbent composition in register above the indicator composition and extending at most only slightly beyond the periphery of the area of indicator composition. In this manner, the remaining area of the label is preserved for ultraviolet light responsive implementations, and only a minimal, economical amount of ultraviolet light absorbent composition is expended.

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