Patents by Inventor Kwang Heon Kim

Kwang Heon Kim 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).

  • Nanocomposites, synthesis method thereof and capacitor comprising the same
    Patent number: 8053026
    Abstract: A method for the synthesis of nanocomposites is provided. The method comprises the steps of mixing carbon nanotubes with a urea solution to form urea/carbon nanotube composites (first step), mixing the urea/carbon nanotube composites with a solution of a metal oxide or hydroxide precursor to prepare a precursor solution (second step), and hydrolyzing the urea in the precursor solution to form a metal oxide or hydroxide coating on the carbon nanotubes (third step). Further provided are nanocomposites synthesized by the method. In the nanocomposites, a metal oxide or hydroxide is coated to a uniform thickness in the nanometer range on porous carbon nanotubes. Advantageously, the thickness of the coating can be easily regulated by controlling the urea content of urea/carbon nanotube composites as precursors. In addition, the nanocomposites are nanometer-sized powders and have high electrical conductivity and large specific surface area.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: November 8, 2011
    Assignee: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jin Go Kim, Sang Bok Ma, Kwang Heon Kim, Kwang Bum Kim
  • NANOCOMPOSITES, SYNTHESIS METHOD THEREOF AND CAPACITOR COMPRISING THE SAME
    Publication number: 20090042028
    Abstract: A method for the synthesis of nanocomposites is provided. The method comprises the steps of mixing carbon nanotubes with a urea solution to form urea/carbon nanotube composites (first step), mixing the urea/carbon nanotube composites with a solution of a metal oxide or hydroxide precursor to prepare a precursor solution (second step), and hydrolyzing the urea in the precursor solution to form a metal oxide or hydroxide coating on the carbon nanotubes (third step). Further provided are nanocomposites synthesized by the method. In the nanocomposites, a metal oxide or hydroxide is coated to a uniform thickness in the nanometer range on porous carbon nanotubes. Advantageously, the thickness of the coating can be easily regulated by controlling the urea content of urea/carbon nanotube composites as precursors. In addition, the nanocomposites are nanometer-sized powders and have high electrical conductivity and large specific surface area.
    Type: Application
    Filed: January 25, 2008
    Publication date: February 12, 2009
    Inventors: Jin Go Kim, Sang Bok Ma, Kwang Heon Kim, Kwang Bum Kim