Patents by Inventor Hilda R. Zanapalidou

Hilda R. Zanapalidou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Device and method for electrodialysis
    Patent number: 7662267
    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.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: February 16, 2010
    Assignee: Ionics, Incorporated
    Inventors: William W. Carson, Keith J. Sims, Oleg Grebenyuk, Thomas J. Susa, Hilda R. Zanapalidou, Wayne A. McRae, Russell J. MacDonald
  • Device and method for eletrodialysis
    Publication number: 20040060823
    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.
    Type: Application
    Filed: October 27, 2003
    Publication date: April 1, 2004
    Inventors: William W. Carson, Keith J. Sims, Oleg Grebenyuk, Thomas Susa, Hilda R. Zanapalidou, Wayne A. McRae