Patents by Inventor Wilella D. Burgess

Wilella D. Burgess 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).

  • Microbial desulfurization of coal
    Patent number: 4851350
    Abstract: A process for the microbial desulfurization of the coal utilizing Hansenula sydowiorum, Hansenula ciferrii, Hansenula lynferdii, and/or Cryptococcus albidus.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: July 25, 1989
    Assignee: The Standard Oil Company
    Inventors: Stanley E. Stevens, Jr., Wilella D. Burgess
  • Biological desulfurization of coal
    Patent number: 4659670
    Abstract: A process for the preparation of microorganisms, ATCC No. 39327 which are capable of reproducible reduction of sulfur, particularly organic sulfur, in coal wherein the novel microorganisms are grown in situ enriched with sulfur compounds and subsequently grown in the presence of a coal substrate and nutrient medium while maintaining an essentially neutral pH. Contacting an aqueous coal slurry with the novel microorganism of the present invention provides coal having reduced organic sulfur content.
    Type: Grant
    Filed: May 18, 1983
    Date of Patent: April 21, 1987
    Assignee: The Standard Oil Company
    Inventors: Stanley E. Stevens, Jr., Wilella D. Burgess