Method for thiosulfate leaching of precious metal-containing materials

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May 25, 2010
Grant Date
Jun 17, 2004
app pub date
Nov 13, 2003
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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Patent Owner	Address
PLACER DOME TECHNOCAL SERVICES LIMITED	1600-1055 DUNSMUIR STREET VANCOUVER V7X 1P1

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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

10713640

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PATENT NO	7722840
APP PUB NO	20040115108A1
SERIAL NO	10713640
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
May 25, 2010	US,7722840,B2 US7722840B2	GRANTED PATENT AS SECOND PUBLICATION
June 17, 2004	US,20040115108,A1 US20040115108A1	FIRST PUBLISHED PATENT APPLICATION

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10713640

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