Patents by Inventor Han Bo Yun

Han Bo Yun 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).

  • Polymerization of unsaturated monomers with radiation in the presence of salts
    Patent number: 4024040
    Abstract: Improved process for the preparation of water-soluble, substantially linear, high molecular weight polymers, comprising irradiating an aqueous solution of an ethylenically unsaturated monomer and a water-soluble salt under controlled conditions of concentration, radiation intensity, conversion, and total radiation dose. The polymers may be obtained in aqueous gel form or recovered in the form of powder. The polymers are useful as flocculating, thickening, and mobility control agents.
    Type: Grant
    Filed: February 26, 1974
    Date of Patent: May 17, 1977
    Assignee: Hercules Incorporated
    Inventors: Charalambos J. Phalangas, Alfred J. Restaino, Han Bo Yun