The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1989
Filed:
Mar. 17, 1988
Applicant:
Inventors:
Samuel W Marcuson, Mississauga, CA;
Carlos M Diaz, Mississauga, CA;
James A Bell, Oakville, CA;
Haydn Davies, Sudbury, CA;
Richard Stratton-Crawley, Port Colborne, CA;
Assignee:
Inco Limited, Toronto, CA;
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 76 ; 75 9 / ;
Abstract
A copper converting process starting with white metal or a mixture of white metal and metallic copper in which oxidizing gas contacts the molten copper mass either at or near the top surface of the molten mass while the mass is sparged with an inert gas from at or near the bottom of the mass and sparging is continued after contact with the oxidizing gas ceases.