Process for purifying sand

United States of America Patent

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Sep 5, 2006
Grant Date
Jun 12, 2003
app pub date
Aug 19, 2002
filing date
Aug 20, 2001

priority date (Note)
Expired

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Abstract

A process for removing iron impurities from sand by treatment of an aqueous slurry of the sand with a chelating agent for iron cations.

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Patent Owner(s)

Patent Owner	Address
GE BETZ INC	TREVOSE PA 19053-6783

International Classification(s)

C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Small, Terrence P	Glen Mills, PA	5	27

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Process for purifying sand

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United States of America Patent

10223196

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PATENT NO	7101524
APP PUB NO	20030108463A1
SERIAL NO	10223196
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
September 05, 2006	US,7101524,B2 US7101524B2	GRANTED PATENT AS SECOND PUBLICATION
June 12, 2003	US,20030108463,A1 US20030108463A1	FIRST PUBLISHED PATENT APPLICATION

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10223196

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