Patents by Inventor Robert F. Sugden

Robert F. Sugden 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).

  • Fused ring indole derivatives and antidepressant compositions containing them
    Patent number: 4126683
    Abstract: The invention concerns novel fused ring indole derivatives of the formula ##STR1## and the pharmaceutically acceptable acid addition and quaternary ammonium salts thereof, wherein n represents 1 or 2 and R.sup.1 represents hydrogen, hydroxyl, lower alkyl, lower alkoxy, trifluoromethyl, halogen, amino or mono- or di-(lower)alkylamino. The compounds are useful as anti-depressant agents.
    Type: Grant
    Filed: June 8, 1977
    Date of Patent: November 21, 1978
    Assignee: John Wyeth & Brother Limited
    Inventors: Alan C. White, Robert F. Sugden