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:
Dec. 08, 1981
Filed:
Oct. 06, 1980
Applicant:
Inventors:
Peter G Mein, LaSalle, IL (US);
Arno H Reidies, LaSalle, IL (US);
Assignee:
Carus Chemical Company, Inc., LaSalle, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D / ; C01G / ;
U.S. Cl.
CPC ...
423150 ; 423179 ; 423202 ; 423275 ; 423594 ;
Abstract
Potassium ferrate (VI), K.sub.2 FeO.sub.4, which has been crystallized from a concentrated aqueous solution of KOH is washed with an aqueous solution of a potassium salt of an inorganic acid to remove the residual KOH. The wash solution is at an alkaline pH and contains a high concentration of the potassium salt.