Colorless petroleum markers

United States of America Patent

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Dec 14, 1999
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app pub date
Jan 5, 1998
filing date
Apr 13, 1995

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Abstract

Petroleum products are marked with a marker such as thymolphthalein or cresolphthalein. When the marked petroleum products are contacted with a developing reagent, a color develops.

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Patent Owner	Address
UNITED COLOR MANUFACTURING INC	NEWTOWN PA 18940

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Inventor Name	Address	# of filed Patents	Total Citations
Desai, Bharat	Ringwood, NJ	13	80
Smith, Michael J	Newtown, PA	195	5886

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Colorless petroleum markers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09002952

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PATENT NO	6002056
SERIAL NO	09002952
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09002952

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