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. 18, 1985
Filed:
Oct. 30, 1981
Applicant:
Inventors:
Kiyomi Funabashi, Katsuta, JP;
Toshio Takagi, Hitachi, JP;
Fumio Kawamura, Hitachi, JP;
Makoto Kikuchi, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
521 26 ; 209173 ;
Abstract
A powdery cation-exchange resin and a powdery anion-exchange resin which are coupled to each other are stripped apart by the use of an electrolytic solution whose ionic strength is 5 to 15, and both the stripped ion-exchange resins are separated by letting them stand or by employing a centrifugal separator, thereby regenerating the powdery cation-exchange and anion-exchange resins.