Patents by Inventor Palmer L. Peterson

Palmer L. Peterson 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).

  • Separation of solids by varying the bulk density of a fluid separating medium
    Patent number: 4111798
    Abstract: A method and apparatus for separating objects having a density greater than a selected density value from objects having a density less than said selected density value.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: September 5, 1978
    Assignee: Battelle Development Corporation
    Inventors: Palmer L. Peterson, James B. Duffy, Richard D. Tokarz