Patents by Inventor Shwn-Ji Susie Hwang Lee

Shwn-Ji Susie Hwang 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).

  • Method for the demethoxycarbonylation of porphyrinic compounds such as pheophorbides
    Patent number: 5973141
    Abstract: An improved method for the demethoxycarbonylation of porphyrinic compounds such as pheophorbides involving reacting the starting porphyrinic compound with a high boiling point solvent to which a selected amount of water has been added.
    Type: Grant
    Filed: November 27, 1998
    Date of Patent: October 26, 1999
    Assignee: Miravant Pharmaceuticals, Inc.
    Inventors: Byron C. Robinson, Avinash S. Phadke, Shwn-Ji Susie Hwang Lee, Dipanjan Sengupta