Patents by Inventor Weishih Wu

Weishih Wu 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).

  • Derivatives of porphyrin useful in photodynamic therapy
    Patent number: 5064952
    Abstract: Compounds which are long wavelength-absorbing derivatives of porphyrinone nuclei are described which are useful in photodynamic therapy and related technologies. These compounds contain the porphyrin nucleus beta-substituted with alkyl and/or omega-carboxyalkyl substituents wherein the ring system contains at least one exocyclic double bond in which the exocyclic participant is selected from the group consisting of .dbd.S, .dbd.CR'.sub.2, and NR".
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: November 12, 1991
    Assignee: Board of Trustees, a Constitutional Corporation Operating Michigan State University
    Inventors: Chi-Kwong Chang, Weishih Wu