Patents by Inventor David Todd R. Ellenor

David Todd R. Ellenor 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).

  • Process for the removal of hydrogen sulfide from a gas stream
    Patent number: 5730784
    Abstract: Hydrogen Sulfide is substantially completely removed from a gas stream in a two-stage operation. Hydrogen Sulfide is first partially oxidized to sulfur dioxide and the sulfur dioxide reacted with part of the remaining hydrogen sulfide while the hydrogen sulfide not so reacted is subsequently oxidized, thereby removing all of the hydrogen sulfide from the gas stream.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 24, 1998
    Assignees: The University of Toronto Innovations Foundation, Apollo Environmental Systems Corp.
    Inventors: James W. Smith, David Todd R. Ellenor, John N. Harbinson
  • Black liquor viscosity control
    Patent number: 5705032
    Abstract: Black liquor is subjected to high shear to cause a breakdown of macromolecules contained therein and provide a reduction in viscosity, thereby improving the processability of the black liquor and enabling the solids content to be increased.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: January 6, 1998
    Assignee: Thor Technology Corporation
    Inventors: John N. Harbinson, David Todd R. Ellenor