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. 25, 1991
Filed:
Aug. 03, 1989
Applicant:
Inventors:
William E Katz, Weston, MA (US);
Irving D Elyanow, Somerville, MA (US);
Keith J Sims, Framingham, MA (US);
Assignee:
Ionics, Incorporated, Watertown, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2041824 ; 204301 ; 204151 ;
Abstract
An electrodeionization polarity reversal apparatus is employed for the removal of dissolved salts from liquids. The preferred embodiment comprises the use of a fluid permeable filler of an equinormal mixture of anion and cation exchange material in both the ion-depleting and ion-concentration chambers while employing periodic symmetrical polarity reversal.