Patents by Inventor Y. A. Gunawardana

Y. A. Gunawardana 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).

  • Alkaloid compounds, and pharmaceutical compositions containing them
    Patent number: 4868191
    Abstract: Novel alkaloid compounds that are derivatives of methaniminoetheno[d,e]acridine are derived from marine sponges of the genus Dercitus. These compounds and pharmaceutical compositions containing therapeutic effective amounts thereof are useful as antitumor and immunomodulatory medications.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: September 19, 1989
    Assignee: Harbor Branch Oceanographic Institution, Inc.
    Inventors: Shigeo Komoto, Y. A. Gunawardana