Patents by Inventor Christopher Demerson

Christopher Demerson 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).

  • Certain pyrano [3,4-b]indoles and thiopyrano[3,4-b]indoles
    Patent number: 3939178
    Abstract: Indole derivatives characterized by having a 1,3,4,9-tetrahydropyrano[3,4-b]indole or 1,3,4,9-tetrahydrothiopyrano[3,4-b]indole nucleus bearing a substituent in position 1, said substituent incorporating an acid, ester or amide function therein, are disclosed. The nucleus is further substituted at position 1 and may be optionally substituted at positions 3, 4, 5, 6, 7, 8, and 9. The derivatives are useful antiinflammatory, analgesic, antibacterial and antifungal agents and methods for their preparation and use are also disclosed.
    Type: Grant
    Filed: September 15, 1972
    Date of Patent: February 17, 1976
    Assignee: American Home Products Corporation
    Inventors: Christopher A. Demerson, Leslie G. Humber, Thomas A. Dobson, Ivo L. Jirkovsky