Patents by Inventor Robert D. Holstead

Robert D. Holstead 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).

  • Device for separation of liquid from paste or semi-solid
    Patent number: 4045354
    Abstract: Apparatus for readily separating a low viscosity liquid from an immiscible high viscosity paste or semi-solid comprising a conduit projecting proximate to an upwardly inclined surface provided with means for gravity drainage of the low viscosity liquid. The apparatus is particularly adapted for separating water from a coagulated aqueous latex of polymerized elastomer.
    Type: Grant
    Filed: April 1, 1974
    Date of Patent: August 30, 1977
    Assignee: Monsanto Company
    Inventors: Charles E. Wyman, Robert D. Holstead