Patents by Inventor David Summers Thomson

David Summers Thomson 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).

  • Pharmaceutical compositions and method of use
    Patent number: 4113879
    Abstract: Pharmaceutical compositions, containing a 4,4'-dihydroxy-3,3'-triphenylmethanedicarboxylic acid (or an oxidized derivative) as active ingredient, are described and are prepared conventionally in a form suitable for topical administration, e.g., ointment. The compositions are useful for the treatment of inflammatory diseases and inflammatory conditions of the skin. Many of the active ingredients are novel compounds. A representative novel active ingredient is 4"-cyano-4,4'-dihydroxy-5,5'-dimethyl-3,3'-triphenylmethanedicarboxylic acid.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: September 12, 1978
    Assignee: Imperial Chemical Industries Limited
    Inventors: Geraint Jones, David Summers Thomson