Patents by Inventor H. Howard Sun

H. Howard Sun 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).

  • Sterol disulfates and methods of use
    Patent number: 5079239
    Abstract: Novel sterol disulfates have been isolated from the marine sponge Petrosia weinbergii. These compounds, and derivatives thereof, are useful antiviral compounds. One of these compounds is active against the AIDS virus and exhibits immunosuppressive activity.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: January 7, 1992
    Assignee: Harbor Branch Oceanographic Institution, Inc.
    Inventors: H. Howard Sun, Sue S. Cross, Frank Koehn, Malika Gunasekera
  • Novel pyrroloquinoline alkaloids and methods of use
    Patent number: 5028613
    Abstract: The subject invention pertains to novel compounds, batzellines and isobatzellines, isolated from marine sponges. These compounds have been shown to possess antitumor activity. Various derivatives of these compounds have been prepared. The procedures for the isolation of the parent compounds and the preparation of some of their derivatives are described.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: July 2, 1991
    Assignee: Repligen Corporation
    Inventors: H. Howard Sun, Shin-ishi Sakemi
  • Bis-indole imidazole compounds which are useful antitumor and antimicrobial agents
    Patent number: 4970226
    Abstract: Novel brominated bisindole-imidazole alkaloids have been isolated from marine sponges. These compounds, and derivatives thereof, are useful antimicrobial and antitumor compounds.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: November 13, 1990
    Assignee: Harbor Branch Oceanographic Institution, Inc.
    Inventors: H. Howard Sun, Shinichi Sakemi, Sarath Gunasekera, Yoel Kashman, May Lui, Neal Burres, Peter McCarthy
  • Process for increasing the filling power of tobacco lamina filler having a low initial moisture content
    Patent number: 4458700
    Abstract: A process is disclosed for increasing the filling power of tobacco lamina filler having an OV value, immediately before treatment, within the range of from about 1% to about 10%, preferably from about 2% to about 7%, without the use of exogenous impregnants by contacting the filler with a high velocity gaseous medium at elevated temperature such that heat is rapidly and substantially uniformly transferred from the medium to the filler for a total contact time sufficient to stiffen and expand the filler.
    Type: Grant
    Filed: April 15, 1982
    Date of Patent: July 10, 1984
    Assignee: Philip Morris Incorporated
    Inventors: Gus D. Keritsis, H. Howard Sun