Patents by Inventor Yuen Onn Wong

Yuen Onn Wong 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).

  • Oxine modified silican polyamine composites for the separation of gallium from aluminum, ferric from nickel and copper from nickel
    Patent number: 8343446
    Abstract: The oxine ligands 5-chloro-8-hydroxyquiniline and 5-sulfoxyl-8-hydroxyquinoline are covalently bound, using, for example, the Mannich reaction, to a silica gel polyamine composite made from a silanized amorphous silica xerogel and polyallylamine. The resulting modified composites, termed CB-1 (X?Cl) and SB-1 (X?SO3H), respectively, show a clear selectivity for trivalent over divalent ions and selectivity for gallium over aluminum. The compounds of the invention can be applied for the sequestration of metals, such as heavy metals, from contaminated mine tailing leachates.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: January 1, 2013
    Assignee: The University of Montana
    Inventors: Edward Rosenberg, Paul Miranda, Yuen Onn Wong
  • Oxine Modified Silican Polyamine Composites for the Separation of Gallium from Aluminum, Ferric From Nickel and Copper from Nickel
    Publication number: 20120128556
    Abstract: The oxine ligands 5-chloro-8-hydroxyquiniline and 5-sulfoxyl-8-hydroxyquinoline are covalently bound, using, for example, the Mannich reaction, to a silica gel polyamine composite made from a silanized amorphous silica xerogel and polyallylamine. The resulting modified composites, termed CB-1 (X?Cl) and SB-1 (X?SO3H), respectively, show a clear selectivity for trivalent over divalent ions and selectivity for gallium over aluminum. The compounds of the invention can be applied for the sequestration of metals, such as heavy metals, from contaminated mine tailing leachates.
    Type: Application
    Filed: October 13, 2011
    Publication date: May 24, 2012
    Inventors: Edward Rosenberg, Paul Miranda, Yuen Onn Wong