Patents by Inventor Jong-Gu Kum

Jong-Gu Kum 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).

  • Halogen-free flameproof thermoplastic molding materials
    Patent number: 6174945
    Abstract: The present invention relates to halogen-free flameproof thermopolastic molding compounds which comprise an aromatic polycarbonate, a styrene-containing copolymer, a styrene-containing graft polymer, a phosphorus compound, a silicon compound, and a tetrafluoroethylene polymer. It has been found that the use of a specific type of silicon compound leads to a polymer mixture having improved stress crack resistance and impact properties. The silicon compound is represented as the following Formula (I). in which n and m have a value of from 5 to 8, and x and y have a value of from 1 to 5.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: January 16, 2001
    Assignee: LG Chemical Ltd.
    Inventors: Yong-Se Kim, Duk-Gun Hwang, Hong-Jang Kim, Kwang-Jae Lee, Jong-Gu Kum