Patents by Inventor Dimitrios Filippou

Dimitrios Filippou 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).

  • Process for polishing metal contaminants from an acidic solution comprising scandium
    Patent number: 12145855
    Abstract: The present disclosure provides a process for polishing at least one metal contaminant from a stock solution comprising Sc comprising the steps of a) contacting the stock solution with an ion exchange resin capturing Sc and the at least one metal contaminate so as to produce a metal ion exchange resin complex, and b) scrubbing the metal resin complex with a scrubbing solution comprising a carboxylate ion, so as to produce a Sc ion exchange resin complex and a spent carboxylate solution, which can be treated by electrodialysis to regenerate the carboxylate ion required for scrubbing.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: November 19, 2024
    Assignee: RIO TINTO IRON AND TITANIUM CANADA INC.
    Inventors: Michel Paquin, Dimitrios Filippou
  • PROCESS FOR POLISHING METAL CONTAMINANTS FROM AN ACIDIC SOLUTION COMPRISING SCANDIUM
    Publication number: 20210163309
    Abstract: The present disclosure provides a process for polishing at least one metal contaminant from a stock solution comprising Sc comprising the steps of a) contacting the stock solution with an ion exchange resin capturing Sc and the at least one metal contaminate so as to produce a metal ion exchange resin complex, and b) scrubbing the metal resin complex with a scrubbing solution comprising a carboxylate ion, so as to produce a Sc ion exchange resin complex and a spent carboxylate solution, which can be treated by electrodialysis to regenerate the carboxylate ion required for scrubbing.
    Type: Application
    Filed: May 3, 2019
    Publication date: June 3, 2021
    Inventors: Michel Paquin, Dimitrios Filippou