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:
Aug. 07, 1990
Filed:
Oct. 20, 1988
Applicant:
Inventor:
Bo Hakansson, Sundsvall, SE;
Assignee:
Eka Nobel AB, Surte, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 95 ; 204130 ; 204 98 ;
Abstract
At the production of alkali metal chlorate by electrolysis of an electrolyte containing alkali metal chloride in an electrolyzer, impurities of silicon are removed by precipitation with iron ions. Preferably, Fe(II) and/or Fe(III) can be employed as the iron ions. The iron ions can be added either to the electrolyte or to an aqueous solution of the alkali metal chloride.