Patents by Inventor Frederick B. Eastwood

Frederick B. Eastwood 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).

  • Laminar flow filtration process
    Patent number: 4725364
    Abstract: Described herein is a process for the removal of particulates from a fluid undergoing laminar flow. The invention is especially useful in that it enables the removal of soft, gelatinous particulates from a viscous liquid.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: February 16, 1988
    Assignee: BASF Corporation
    Inventors: Rupert B. Hurley, Frederick B. Eastwood
  • Nonoxidative process for purifying aqueous inorganic salt solutions employed in the wet spinning of filamentary vinyl polymers
    Patent number: 4029725
    Abstract: Filamentary vinyl polymer compositions are commonly prepared according to a procedure which includes the following steps:A. polymerizing a vinyl monomer in a concentrated aqueous inorganic salt solution to produce a vinyl polymer solution;B. spinning the resulting vinyl polymer solution through a spinnerette into a coagulating bath containing an aqueous solution of the same inorganic salt as that employed in the polymerization step, the concentration of inorganic salt in the coagulating bath being maintained at a level which affords precipitation of the vinyl polymer to form a coherent filamentary gel;C. washing the vinyl polymer filamentary gel so produced;D. recovering the concentrated aqueous inorganic salt solution from the washing and coagulation steps by concentrating the combined effluents thereof; andE. recycling the recovered concentrated aqueous inorganic salt solution into the polymerizing step.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: June 14, 1977
    Assignee: Dow Badische Company
    Inventors: Rupert B. Hurley, Frederick B. Eastwood, Joe A. Mann