Patents by Inventor KwangUng Kim

KwangUng 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).

  • Morphologically controlled thermotropic liquid crystalline polymer blended high selective gas separation membranes
    Patent number: 6517606
    Abstract: Liquid crystalline polymer blended gas separation membranes are obtained by melting and processing 50˜99 wt % of a thermoplastic resin, 1˜50 wt % of a thermotropic liquid crystalline polymer and 0.1˜10 wt % of a compatibilizer based on the weight of the thermotropic liquid crystalline polymer. A method for fabricating liquid crystalline polymer blended gas separation membrane includes the steps of: mixing 50˜99 wt % of thermoplastic resin, 1˜50 wt % of thermotropic liquid crystalline polymer and 0.1˜10 wt % of compatibilizer based on the weight of the thermotropic liquid crystalline polymer; and biaxially extruding the resulting blend melt from an extrusion die of a film blowing apparatus to fabricate a film. The gas separation membrane exhibits high permeability exceeding the limit value which has been hardly overcome by the existing separation membranes.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: February 11, 2003
    Assignees: Korea Institute of Science and Technology, Bionast Co., Ltd.
    Inventors: Yongsok Seo, KwangUng Kim, SoonMan Hong, Seungsang Hwang, Seong Uk Hong
  • Morphologically controlled thermotropic liquid crystalline polymer blended high selective gas separation membranes
    Publication number: 20020043155
    Abstract: Liquid crystalline polymer blended gas separation membranes are obtained by melting and processing 50˜99 wt % of a thermoplastic resin, 1˜50 wt % of a thermotropic liquid crystalline polymer and 0.1˜10 wt % of a compatibilizer based on the weight of the thermotropic liquid crystalline polymer. A method for fabricating liquid crystalline polymer blended gas separation membrane includes the steps of: mixing 50˜99 wt % of thermoplastic resin, 1˜50 wt % of thermotropic liquid crystalline polymer and 0.1˜10 wt % of compatibilizer based on the weight of the thermotropic liquid crystalline polymer; and biaxially extruding the resulting blend melt from an extrusion die of a film blowing apparatus to fabricate a film. The gas separation membrane exhibits high permeability exceeding the limit value which has been hardly overcome by the existing separation membranes.
    Type: Application
    Filed: June 21, 2001
    Publication date: April 18, 2002
    Applicant: Korea Institute of Science and Technology and Bionast Co., Ltd.
    Inventors: Yongsok Seo, KwangUng Kim, SoonMan Hong, Seungsang Hwang, Seong Uk Hong