Patents by Inventor Dong Keun Han

Dong Keun Han 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).

  • Process for the preparation of sulfonated polyethyleneoxide-substituted polymers with improved blood compatibility
    Patent number: 5216087
    Abstract: Novel sulfonated polyethyleneoxide-substituted polymers having improved blood compatibility are provided. The polymers are produced by substituting a polymeric substrate having active sites of amide or acid amide group, such as polyurethane, polyamide and polyacrylamide, with sulfonated polyethyleneoxide [PEO--(SO.sub.3 H).sub.n ].The polymers according to the present invention are valuable as construction materials of the artificial organs for the circulatory system in contact with blood, such as artificial hearts, artificial blood vessels, artificial kidneys, etc.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: June 1, 1993
    Assignee: Korea Institute of Science and Technology
    Inventors: Young-Ha Kim, Seo-Young Jeong, Kwang-Duk Ahn, Dong-Keun Han
  • Sulfonated polyethyleneoxide-substituted polymers with improved blood compatibility
    Patent number: 5116361
    Abstract: Novel sulfonated polyethyleneoxide-substituted polymers having improved blood compatibility are provided. The polymers are produced by substituting a polymeric substrate having active sites of amide or acid amide group, such as polyurethane, polyamide and polyacrylamide, with sulfonated polyethyleneoxide PEO-SO.sub.3 H.The polymers according to the present invention are valuable as construction materials of the artificial organs for the circulatory system in contact with blood, such as artificial hearts, artificial blood vessels, artificial kidneys, etc.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: May 26, 1992
    Assignee: Korea Institute of Science and Technology
    Inventors: Young-Ha Kim, Seo-Young Jeong, Kwang-Duk Ahn, Dong-Keun Han