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. 05, 2017
Filed:
May. 16, 2012
Timothy W. Yarlott, Napa, CA (US);
Kokichi Hanaoka, Nagano, JP;
Hiroshi Tanaka, Shizuoka, JP;
Dick Wullaert, Goleta, CA (US);
Edward E. Alexander, Alameda, CA (US);
Timothy W. Yarlott, Napa, CA (US);
Kokichi Hanaoka, Nagano, JP;
Hiroshi Tanaka, Shizuoka, JP;
Dick Wullaert, Goleta, CA (US);
Edward E. Alexander, Alameda, CA (US);
Other;
Abstract
The present invention provides an extraction solvent for extracting metallic elements that is characterized in that: the total concentration of chlorine (Cl2) and hypochlorous acid (HOCl) is from 20 to 1000 ppm; chlorine (Cl2) and hypochlorous acid (HOCl) are included at a molar ratio of 1:1 to 1:11; the oxidation-reduction potential is from 1100 to 1400 mV; and the pH is from 1.7 to 3.7. The present invention also provides a method for producing said extraction solvent, and a method for recovering metallic elements by using said extraction solvent.