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:
Jul. 27, 1976
Filed:
Mar. 28, 1975
Applicant:
Inventor:
Joseph Lindsey Bryson, deceased, LATE OF Blackwell, EN;
Assignee:
Metallurgical Development Company, Nassau, BA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ; C22B / ;
U.S. Cl.
CPC ...
75 / ; 75103 ; 75117 ; 423 33 ; 423 35 ; 423 36 ; 423 24 ;
Abstract
A method of leaching copper values from copper dross obtained from pyro-metallurgical lead bullion by contacting finely-divided particles of the copper dross with an aqueous ammoniacal solution, preferably a solution of ammonium carbonate and ammonium hydroxide, to dissolve copper from the dross. The leaching will usually be carried out in a gas containing free oxygen and the leaching solution may advantageously contain sulphate ions in addition to carbonate ions.
Bryson, deceased, Joseph. (1976). Ammoniacal extraction of copper from metallic materials (U.S. Patent No. 3971652). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3971652
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile