Patents by Inventor George Barvinchak

George Barvinchak 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: 4206288
    Abstract: A process for the removal of pyrite from coal wherein an aqueous slurry containing finely-divided coal particles is subjected to the action of iron and sulfur oxidizing microorganisms selected from the Thiobacillus ferrooxidans group in a concentration range of between about 3.times.10.sup.10 and 1.times.10.sup.12 cells per gram of pyrite present in the coal slurry.
    Type: Grant
    Filed: May 5, 1978
    Date of Patent: June 3, 1980
    Assignee: Union Carbide Corporation
    Inventors: Clifford M. Detz, George Barvinchak