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:
Jun. 23, 1992
Filed:
Feb. 22, 1990
Applicant:
Inventors:
Christian Pralus, Saint-Cyr-au-Mont-d'Or, FR;
Jean-Claude Chassagne, Grenoble, FR;
Assignee:
Atochem, Puteaux, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204 95 ; 204129 ; 210759 ; 423475 ;
Abstract
The objectionable hypochlorite values, ClO.sup.- ions, contained in a solution of an alkali metal chlorate produced by the electrolysis of an aqueous solution of the corresponding chloride of the alkali metal, are effectively destroyed (consumed) without adversely affecting the valence state of the hexavalant chromium values also contained therein, by intimately contacting such chlorate solution with an effective amount of hydrogen peroxide such that the molar ratio hydrogen peroxide/hypochlorites is at least one and no greater than 3 and the molar ratio available hydrogen peroxide/hypochlorites is at least one.