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:
Aug. 20, 2002
Filed:
Nov. 02, 2000
Shin Sato, Sagamihara, JP;
Takayuki Moribe, Kawagoe, JP;
Kurita Water Industries, Ltd., Tokyo, JP;
Abstract
An electric deionizing apparatus comprising a first and a second electric deionizing apparatus arranged in series, in which water is deionized by the first electric deionizing apparatus and then deionized by the second electric deionizing apparatus, and a means for adding an aqueous electrolyte solution into water released from the first electric deionizing apparatus and which is supplied into the second electric deionizing apparatus. A process for electric deionization comprising supplying water to a first electric deionizing apparatus, deionizing the water in the first electric deionizing apparatus, adding an aqueous electrolyte solution to the deionized water, supplying the deionized water to a second electric deionizing apparatus and deionizing the supplied deionized water in the second electric deionizing apparatus. Silica and boron components in the water are effectively removed to obtain deionized water having a high resistivity.