Patents by Inventor Jin D. Song

Jin D. Song 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).

  • Biodegradable copolymer for medical application
    Patent number: 5476909
    Abstract: The present invention relates to a triblock(ABA) copolymer used for medical application essentially consisting of: PLA, PGA, or PLA/PGA as hydrophobic block(A), biodegradable PEO derivatives synthesized by PEOs less than 4,000 molecular weight by the ester linkage among them as hydrophilic block (B). The present invention also provides a triblock copolymer easily degradable to the compounds less than M.W. 4,000 in order to excrete through the human kidney, which enables its medical application. Furthermore, using the triblock copolymer of the present invention, the improved hydrogel materials with broad biochemical applications can be provided due to its biodegradable and thermoplastic properties.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: December 19, 1995
    Assignee: Sam Yang Co., Ltd.
    Inventors: Gun P. Kim, Jin D. Song