Patents by Inventor lk-Soo Chung

lk-Soo Chung 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).

  • Biodegradale polyurethane capsules and manufacturing method thereof
    Publication number: 20040084791
    Abstract: The present invention relates to biodegradable polyurethane capsules for molded product of polyurethane foam and to methods for manufacturing the same, the inventive biodegradable polyurethane capsule comprises a powder made from a biodegradable material, first coating layer of calcium alginate gel formed on the surface of said power and second coating layer of foamable polyurethane resin formed on the surface of said first coating layer. Products manufactured from the biodegradable polyurethane capsule according to the present invention can be widely used as heat isolating materials and heat isolating structural materials because the basic physical properties such as heat insulation are good.
    Type: Application
    Filed: December 29, 2003
    Publication date: May 6, 2004
    Inventors: Kyu-Tek Han, Jung-Hoon Choi, In-Gyu Lee, lk-Soo Chung