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. 16, 2010
Filed:
Aug. 10, 2001
William W. Carson, Hopkinton, MA (US);
Keith J. Sims, Wayland, MA (US);
Oleg Grebenyuk, Woburn, MA (US);
Thomas J. Susa, Ludlow, MA (US);
Hilda R. Zanapalidou, Winchester, MA (US);
Wayne A. Mcrae, Mannedorf, CH;
Russell J. Macdonald, Wilmington, MA (US);
William W. Carson, Hopkinton, MA (US);
Keith J. Sims, Wayland, MA (US);
Oleg Grebenyuk, Woburn, MA (US);
Thomas J. Susa, Ludlow, MA (US);
Hilda R. Zanapalidou, Winchester, MA (US);
Wayne A. McRae, Mannedorf, CH;
Russell J. MacDonald, Wilmington, MA (US);
Ionics, Incorporated, Watertown, MA (US);
Abstract
An improved apparatus and operating method related thereto for deionizing water to produce substantially pure water using electric field and ion exchange materials are disclosed, including embodiments incorporating one or more of the novel features of brine and electrode streams flowing in a direction counter-current to the stream being deionized, a filling of the brine stream with stratified ion exchange materials, a stream mixing feature for mixing the stream being deionized, a gas removal feature for removal of gases, a spiral-wound embodiment of an electrodialysis device according to the invention, and a method for determining the preferred operating current for electrodialysis systems according to this invention.