Patents by Inventor Jin Eun Jang

Jin Eun Jang 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 preparing post-crosslinked polymer bead whose surface area and pore volume are increased
    Patent number: 6541527
    Abstract: The present invention relates to a process for preparing post-crosslinked polymer bead with increased surface area and pore volume, and suitable pore size, allowing the separation of organic compounds by post-crosslinking gel-type copolymer bead whose crosslinking degree is low and initial surface area is small, or macroporous-type copolymer bead whose crosslinking degree is high and initial surface area is intermediate in the presence of a Friedel-Crafts catalyst, and polymer beads produced thereby. Though the surface area and pore volume of polymer beads may be varied depending on physical properties of copolymer beads and Friedel-Crafts reaction conditions, the present invention provides polymer beads with larger surface area than that of commercially available polymeric adsorbents produced by the conventional method employing a porogen only.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: April 1, 2003
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Son Ki Ihm, Chang Gun Oh, Jou Hyeon Ahn, Jin Eun Jang