Patents by Inventor Lesie G. Humber

Lesie G. Humber 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).

  • Pyrano- and thiopyranoindole derivatives, compositions and methods of use
    Patent number: 4003913
    Abstract: Pyranoindole and thiopyranoindole derivatives characterized by having an amino(lower)alkyl radical attached to either or both the 1 and 9 position of a pyrano[3,4-b]indole or thiopyrano[3,4-b]indole nucleus or having said radical attached to the 1 position of a pyrano[4,3-b]indole or thiopyrano[4,3-b]indole nucleus are disclosed. The amino portion of the amino(lower)alkyl radical may be further substituted with one or two lower alkyl groups or incorporated into a heterocyclic amine radical. The derivatives having the amino(lower)alkyl radical only at position 1 are further substituted at position 1 and may be optionally substituted at positions 3,4,5,6,7,8, and 9.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: January 18, 1977
    Assignee: Ayerst McKenna and Harrison Ltd.
    Inventors: Christopher A. Demerson, Lesie G. Humber, Andre A. Asselin, Ivo Jirkovsky, Thomas A. Dobson