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:
Jun. 14, 2005
Filed:
Nov. 10, 2003
Applicants:
Hugh W. Richardson, Sumter, SC (US);
Gang Zhao, Sumter, SC (US);
Inventors:
Hugh W. Richardson, Sumter, SC (US);
Gang Zhao, Sumter, SC (US);
Assignee:
Phibro-Tech, Inc., Ridgefield Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F001/08 ;
U.S. Cl.
CPC ...
Abstract
Process for producing a copper-containing aqueous solution, in which a copper mass is dissolved in the presence of an oxidant in an aqueous leach liquor containing monoethanolamine and (HMEA)CO. The leach liquor is produced by partially carbonating the monoethanolamine.