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:
Sep. 30, 1980
Filed:
Sep. 21, 1979
Applicant:
Inventors:
George M Freeman, Montreal, CA;
David E Nightingale, Timmins, CA;
Assignee:
Texasgulf Inc., Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C22B / ; C22B / ;
U.S. Cl.
CPC ...
75109 ; 75116 ; 7511 / ; 75120 ; 75121 ; 423 45 ; 423 91 ;
Abstract
A process for treating zinc plant leach residues for the recovery of the lead, silver, and tin values contained therein is disclosed. The process includes the treatment of the zinc plant residue with concentrated sulphuric acid followed by water leaching and other hydrometallurgical steps to separately recover the lead, silver and tin.
Freeman, George. (1980). Treatment of zinc plant leach residues for recovery of the contained (U.S. Patent No. 4225342). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4225342
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile