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:
Feb. 03, 2009
Filed:
Nov. 11, 2003
Applicants:
Masayuki Miwa, Tokyo, JP;
Shin Sato, Tokyo, JP;
Takayuki Moribe, Tokyo, JP;
Inventors:
Assignee:
Kurita Water Industries Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 61/48 (2006.01); C02F 1/469 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrodelonization apparatus comprising multiple anion exchange membranesand cation exchange membranesthat are alternately arranged between a cathodeand an anodeto alternately form concentrating compartmentsand desalting compartmentsis described. The concentrating compartmentsand the desalting compartmentsare filled with ion exchangers, and the filling ratio of anion exchanger to cation exchanger of the ion exchanger in the concentrating compartmentsis higher than that of the ion exchanger in the desalting compartments