Patents by Inventor Heon-Sik Song

Heon-Sik 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).

  • Multi-component composite film method for preparing the same
    Publication number: 20020187401
    Abstract: The present invention provides a multi-component composite film comprising a) polymer support layer; and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.
    Type: Application
    Filed: April 5, 2002
    Publication date: December 12, 2002
    Inventors: Seung-Jin Lee, Hyang-Mok Lee, Soon-Ho Ahn, Jin-Yeon Cho, Hyun-Hang Yong, Hyung-Keun Lee, Sang-Young Lee, Heon-Sik Song, Soon-Yong Park, You-Jin Kyung, Byeong-In Ahn