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. 26, 1980
Filed:
Mar. 01, 1979
Applicant:
Inventors:
Hiroshi Kametani, Tokyo, JP;
Tatsuya Mitsuma, Tokyo, JP;
Assignee:
National Research Institute for Metals, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02C / ;
U.S. Cl.
CPC ...
204151 ; 204149 ; 204152 ; 204 92 ;
Abstract
An aqueous solution containing ions of one or more chalcophile elements is used as a catholyte and electrolyzed in the presence of elemental sulfur powder suspended therein to precipitate the chalcophile elements in the form of sulfide. The precipitated sulfide is then separated from the aqueous layer.