Patents by Inventor Rodney A. Dahlstrom

Rodney A. Dahlstrom 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: 4309254
    Abstract: A process for the production of alcohol from a fermented feed wherein insoluble organic matter is separated prior to entry into a first distillation column. The insoluble organic matter is dried under pressure to produce dried distillers grain and wherein excess vapor is removed from the drying zone to provide heat to the distillation system. The present process also includes removing excess water vapor from the evaporation zone, obtained from supplemental heating supplied by the overhead from said first distillation column, compressing said water vapor, and recycling it to the distillation columns and the evaporation zone.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: January 5, 1982
    Assignee: Stone and Webster Eng. Corp.
    Inventors: Rodney A. Dahlstrom, Jacob N. Rubin