Patents by Inventor Sangphil Lee

Sangphil Lee 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).

  • 3,4-Dihydroisoquinolinium Salt Derivatives
    Publication number: 20090221829
    Abstract: The present invention relates to 3,4-dihydroisoquinolinium salt derivatives. More specifically, the present invention relates to 3,4-dihydroisoquinolinium salt derivatives of the following chemical formula (I).
    Type: Application
    Filed: June 1, 2006
    Publication date: September 3, 2009
    Inventors: Jungho Kim, Sangphil Lee, Junyoung Choi, Young-Ki Paik, Yousuk Lee, Hyungmin Joo