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Charles Arentzen
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Tucson, AZ, US
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last 30 patents
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Patent Grant
Impurity segregation in copper by controlled cooling treatment
Patent number
4,474,614
Issue date
Oct 2, 1984
Atlantic Richfield Company
Charles Arentzen
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Oxidizing flux for simultaneous smelting/converting sulfides of hig...
Patent number
4,457,779
Issue date
Jul 3, 1984
Atlantic Richfield Company
Charles Arentzen
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct production of copper metal
Patent number
4,178,174
Issue date
Dec 11, 1979
The Anaconda Company
Charles Arentzen
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Direct production of copper metal
Patent number
4,148,630
Issue date
Apr 10, 1979
The Anaconda Company
Charles Arentzen
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...