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:
May. 19, 1981
Filed:
Jul. 02, 1979
Applicant:
Inventors:
Manfred G Noack, Northford, CT (US);
Steven A Manke, Wallingford, CT (US);
Assignee:
Olin Corporation, New Haven, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C07F / ;
U.S. Cl.
CPC ...
423 55 ; 134 13 ; 210721 ; 2604 / ;
Abstract
A method has been devised for removing hexavalent chromium from concentrated aqueous alkali metal chlorate solutions by reacting the solution with a hydrazine compound and separating trivalent chromium compound from the solution. Alkali metal hypohalites may be simultaneously removed from the chlorate solution by reaction with excess hydrazine compound.