Patents by Inventor Jim Wilhelm

Jim Wilhelm 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).

  • Sodium-enhanced lime scrubbing method for removing sulfur dioxide from gaseous streams
    Patent number: 5266285
    Abstract: Sulfur dioxide is removed from a gaseous stream by contact with a lime slurry which contains sulfur to produce thiosulfate ions and 2,000-10,000 ppm of effective sodium ions to effect removal of the sulfur dioxide A bleed stream, removed from the scrubbing loop has calcium sulfite solids removed therefrom while separated liquor is returned to the scrubbing loop.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: November 30, 1993
    Assignees: Southern Indiana Gas and Electric Company, Dravo Lime Company
    Inventors: Dennis L. Glancy, John W. College, Jim Wilhelm