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:
Feb. 24, 2009
Filed:
Jun. 25, 2003
Terry A. Todd, Aberdeen, ID (US);
Jack D. Law, Pocatello, ID (US);
R. Scott Herbst, Idaho Falls, ID (US);
Valeriy N. Romanovskiy, St. Petersburg, RU;
Igor V. Smirnov, St.-Petersburg, RU;
Vasily A. Babain, St-Petersburg, RU;
Vyatcheslav M. Esimantovski, St-Petersburg, RU;
Terry A. Todd, Aberdeen, ID (US);
Jack D. Law, Pocatello, ID (US);
R. Scott Herbst, Idaho Falls, ID (US);
Valeriy N. Romanovskiy, St. Petersburg, RU;
Igor V. Smirnov, St.-Petersburg, RU;
Vasily A. Babain, St-Petersburg, RU;
Vyatcheslav M. Esimantovski, St-Petersburg, RU;
The United States of America as represented by the United States Department of Energy, Washington, DC (US);
Abstract
A new method to strip metals from organic solvents in a manner that allows for the recycle of the stripping agent. The method utilizes carbonate solutions of organic amines with complexants, in low concentrations, to strip metals from organic solvents. The method allows for the distillation and reuse of organic amines. The concentrated metal/complexant fraction from distillation is more amenable to immobilization than solutions resulting from current practice.