Patents by Inventor Sui Xue

Sui Xue 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).

  • Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same
    Patent number: 6488859
    Abstract: A cross-linked water-insoluble ion exchange resin comprised of polymerized monomers having a phenyl ring is disclosed. A contemplated resin contains (i) polymerized phenyl ring-containing monomers having a phosphonic acid ligand linked to the phenyl ring, (ii) about 2 to about 5 millimoles per gram (mmol/g) of phosphorus as phosphonic acid ligands, and (iii) a sufficient amount of a sulfonic acid ligand such that the ratio of mmol/g of phosphonic acid to mmol/g sulfonic acid is up to 3:1. A process for removing polyvalent metal cations from aqueous solution, and a process for removing iron(III) cations from acidic copper(II) cation-containing solutions that utilize the contemplated resin or other resins are disclosed.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: December 3, 2002
    Assignees: Arch Development Corp, The University of Tennessee Research Corp
    Inventors: Spiro Alexandratos, Christopher A. Shelley, E. Philip Horwitz, Renato Chiarizia, Michael J. Gula, Sui Xue, James T. Harvey
  • Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same
    Publication number: 20010052496
    Abstract: A cross-linked water-insoluble ion exchange resin comprised of polymerized monomers having a phenyl ring is disclosed. A contemplated resin contains (i) polymerized phenyl ring-containing monomers having a phosphonic acid ligand linked to the phenyl ring, (ii) about 2 to about 5 millimoles per gram (mmol/g) of phosphorus as phosphonic acid ligands, and (iii) a sufficient amount of a sulfonic acid ligand such that the ratio of mmol/g of phosphonic acid to mmol/g sulfonic acid is up to 3:1. A process for removing polyvalent metal cations from aqueous solution, and a process for removing iron(III) cations from acidic copper(II) cation-containing solutions that utilize the contemplated resin or other resins are disclosed.
    Type: Application
    Filed: May 7, 2001
    Publication date: December 20, 2001
    Inventors: Spiro Alexandratos, Christopher A. Shelley, E. Philip Horwitz, Renato Chiarizia, Michael J. Gula, Sui Xue, James T. Harvey