Patents by Inventor Dae-Won Pak

Dae-Won Pak 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).

  • Wastewater treatment by catalytic oxidation
    Patent number: 6461522
    Abstract: Wastewater streams containing various pollutants are economically and efficiently treated at ambient temperature and pressure with hydrogen peroxide, oxygen or ozone in the presence of a heterogeneous catalyst comprising an element selected from the group consisting of Ni, Ru, Co, Fe, Cu, Mn, Li and a mixture thereof supported on a metal oxide selected from the group consisting of MgO, CaO, SnO2, PbO and a mixture thereof.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: October 8, 2002
    Assignee: Korea Institute of Science and Technology
    Inventors: Dae-Won Pak, Won-Seok Chang, Sung-Jin Uhm, Seong-Hwan Han, Kwang-Deog Jung, Seong-Hoon Cho