Colorimetric indicator of radiation exposure

United States of America Patent

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Jan 17, 2012
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Mar 5, 2009
app pub date
Aug 27, 2007
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Aug 27, 2007

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Abstract

A colorimetric composition is disclosed comprising a polycarbonate resin, a dye, and a thiopropionate. The composition undergoes an irreversible color shift to a darker color upon exposure to sunlight or UV radiation. Processes for producing and/or using such a colorimetric composition are also disclosed.

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SABIC GLOBAL TECHNOLOGIES B V	4612 PX BERGEN OP ZOOM

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C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

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Inventor Name	Address	# of filed Patents	Total Citations
Hein, Christopher L	Evansville, US	9	98

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Colorimetric indicator of radiation exposure

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United States of America Patent

11845232

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PATENT NO	8097668
APP PUB NO	20090062424A1
SERIAL NO	11845232
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
January 17, 2012	US,8097668,B2 US8097668B2	GRANTED PATENT AS SECOND PUBLICATION
March 05, 2009	US,20090062424,A1 US20090062424A1	FIRST PUBLISHED PATENT APPLICATION

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11845232

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