Patents by Inventor Chan J. Kim

Chan J. 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).

  • Zinc peroxide process
    Patent number: 4394488
    Abstract: A process is provided for the production of a mixture of butadiene-acrylonitrile polymer and zinc peroxide which comprises (i) reacting an agitated aqueous mixture of French Process zinc oxide, sulphuric acid and hydrogen peroxide to form an aqueous slurry of a mixture of zinc peroxide and zinc oxide, and (ii) mixing with said slurry a latex of a butadiene-acrylonitrile polymer, followed by coagulating the mixture and recovering and drying the product.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: July 19, 1983
    Assignee: Polysar Limited
    Inventors: Chan J. Kim, Ahti A. Koski