Process for treating speiss

United States of America Patent

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Jan 2, 1990
Grant Date
N/A
app pub date
Apr 21, 1986
filing date
Apr 21, 1986

priority date (Note)
Expired

status (Latency Note)

Importance

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Abstract

Arsenic and antimony are separated from speiss by a roasting operation employing pyrite and coke and the arsenic is separated from the resultant product by a water pressure leaching operation.

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First Claim

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Patent Owner(s)

Patent Owner	Address
ASARCO INCORPORATED A CORP OF NJ	NEW YORK NY 10038

International Classification(s)

C22B:PRODUCTION OR REFINING OF METALS

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Clement, II Thomas P	Belle Mead, NJ	3	8
Scott, Jack A	Somerville, NJ	3	10
Wettlaufer, John R	Asbury, NJ	1	1

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Process for treating speiss

Number of patents in Portfolio can not be more than 2000

United States of America Patent

06854237

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Patent Longevity Expired	Forward Citations

PATENT NO	4891061
SERIAL NO	06854237
DOCKET NO

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06854237

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Abstract

First Claim

Family

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