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:
Oct. 23, 2018
Filed:
Dec. 02, 2015
Applicant:
Jx Nippon Mining & Metals Corporation, Tokyo, JP;
Inventors:
Yujiro Tokita, Hitachi, JP;
Hidetoshi Sasaoka, Hitachi, JP;
Assignee:
JX NIPPON MINING & METALS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 7/06 (2006.01); C25C 1/18 (2006.01);
U.S. Cl.
CPC ...
C25C 7/06 (2013.01); C25C 1/18 (2013.01); Y02P 10/212 (2015.11);
Abstract
In the electrolytic refining of lead in a sulfamate bath, the production of a white residue is suppressed, and a decrease in the lead concentration in the electrolytic solution is suppressed. A method for electrolytically refining lead in a sulfamate bath, comprising performing electrolytic refining at a decomposition rate of sulfamic acid controlled at 0.06%/day or less.