Patents by Inventor Weol D. Cho

Weol D. Cho 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).

  • Nitrogen removal from molten metal by slags containing titanium oxides
    Patent number: 7655066
    Abstract: The invention relates to titanium oxide containing slag compositions and associated methods for reducing the nitrogen content of metals. The titanium oxide slag compositions can be used to reduce nitrogen content in various molten metals including steel, nickel, copper, iron, and the like. The nitrogen content of the metals can be reduced by contacting the metal with the titanium oxide containing slag composition. The slag compositions are capable of reducing the nitrogen content of steel to less than 20 ppm without the need for specialized high-quality starting materials or processing equipment.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: February 2, 2010
    Assignee: University of Utah Research Foundation
    Inventors: Peng Fan, Weol D. Cho