Method for thiosulfate leaching of precious metal-containing materials

United States of America Patent

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Jun 9, 2009
Grant Date
Apr 26, 2007
app pub date
Dec 19, 2006
filing date
Nov 15, 2002

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Abstract

Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ heap leaching or lixiviants that include one or more blinding agents.

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PLACER DOME TECHNICAL SERVICES LIMITED

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C22B:PRODUCTION OR REFINING OF METALS

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Inventor Name	Address	# of filed Patents	Total Citations
Hackl, Ralph Peter	Vancouver, CA	21	227
Ji, Jinxing	Burnaby , CA	17	299
West-Sells, Paul George	Vancouver, CA	11	238

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Method for thiosulfate leaching of precious metal-containing materials

Number of patents in Portfolio can not be more than 2000

United States of America Patent

11613056

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PATENT NO	7544232
APP PUB NO	20070089566A1
SERIAL NO	11613056
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 09, 2009	US,7544232,B2 US7544232B2	GRANTED PATENT AS SECOND PUBLICATION
April 26, 2007	US,20070089566,A1 US20070089566A1	FIRST PUBLISHED PATENT APPLICATION

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11613056

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