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:
Jan. 21, 1992
Filed:
Nov. 08, 1990
Applicant:
Inventors:
Sharon D Fritts, Youngstown, NY (US);
Tilak V Bommaraju, Grand Island, NY (US);
Assignee:
Occidental Chemical Corporation, Niagara Falls, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210673 ; 210686 ; 521 26 ;
Abstract
Disclosed is a method of regenerating a cationic exchange resin that has been exposed to chlorate ion. The resin is treated with an acidic regenerating solution that contains sulfite ion in an amount at least stoichiometric with the amount of chlorate remaining on the resin. The resin can either be rinsed with water first and then contacted with an acidic regenerating solution containing sulfite, or the resin can be washed with acidic water containing sulfite ion and then treated with an acidic regenerating solution.