Invention Grant
US08304747B2 Sensors and methods for determining whether an item has been exposed to an environmental condition
有权
用于确定物品是否已经暴露于环境条件的传感器和方法
- Patent Title: Sensors and methods for determining whether an item has been exposed to an environmental condition
- Patent Title (中): 用于确定物品是否已经暴露于环境条件的传感器和方法
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Application No.: US12557130Application Date: 2009-09-10
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Publication No.: US08304747B2Publication Date: 2012-11-06
- Inventor: Tom Kavassalis , Peter M. Kazmaier , Gabriel Iftime , Kentaro Morimitsu , Adela Goredema
- Applicant: Tom Kavassalis , Peter M. Kazmaier , Gabriel Iftime , Kentaro Morimitsu , Adela Goredema
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Oliff & Berridge, PLC
- Main IPC: G01J1/38
- IPC: G01J1/38
Abstract:
A method for determining whether an item has been exposed to an environmental condition during a monitoring period. The method includes placing a sensor at least in proximity to the item at the beginning of the monitoring period so that the sensor will be exposed to a level of an environmental condition that can be correlated to an exposure level of the item to the environmental condition; reading the sensor; and determining from reading the sensor whether the item has been exposed to the environmental condition. The sensor includes a detecting material comprising a photochromic or photothermochromic material, the detecting material selected so that upon exposure to the environmental condition the detecting material exhibits a detectable color change.
Public/Granted literature
- US20110056282A1 SENSORS AND METHODS FOR DETERMINING WHETHER AN ITEM HAS BEEN EXPOSED TO AN ENVIRONMENTAL CONDITION Public/Granted day:2011-03-10
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