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:
Jan. 02, 1990
Filed:
Apr. 21, 1986
Applicant:
Inventors:
Thomas P Clement, II, Belle Mead, NJ (US);
John R Wettlaufer, Asbury, NJ (US);
Jack A Scott, Somerville, NJ (US);
Assignee:
ASARCO Incorporated, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 24 ; 75 63 ; 75 69 ; 75 72 ; 75 78 ; 75 89 ; 7510 / ; 75121 ; 423 88 ; 423617 ;
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.