Patents by Inventor Donald R. McKay

Donald R. McKay 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).

  • Patent number: 4286966
    Abstract: A method for the removal of moisture associated with sulfur and for the melting of solid sulfur. A flow of molten sulfur is circulated through a mixing device in a substantially spiral flow wherein the circulating molten sulfur forms a continuous vortex of molten sulfur. Particulate solid sulfur with or without associated moisture, either as such or in the form of an aqueous slurry or moisture-containing liquid sulfur is fed into the vortex of circulating molten sulfur. Sulfur is discharged from the mixing device and any associated moisture is evaporated and separates from the sulfur. Molten sulfur substantially free of moisture is recovered.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: September 1, 1981
    Assignee: Cominco Ltd.
    Inventors: Charles R. Kirby, Donald R. McKay