Patents by Inventor Steven Paul Sawin

Steven Paul Sawin 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).

  • Fluidized bed polymerization reactor with multiple fluidization grids
    Patent number: 6117399
    Abstract: The invention teaches a novel design for a fluidized bed polymerization reactor which utilizes a primary fluidization grid to provide mixing and fluidization of the polymer and at least one secondary distribution plate located above the first distribution plate to promote segregation of polymer particles by size, the larger particles falling into the lower fluidization zone and the smaller particles being entrained up from the primary fluidization grid and through the secondary distribution grid into an upper reaction zone.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: September 12, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert James Jorgensen, Steven Paul Sawin
  • Fluidized bed polymerization reactor with multiple fluidization grids
    Patent number: 6113862
    Abstract: The invention teaches a novel design for a fluidized bed polymerization reactor which utilizes a primary fluidization grid to provide mixing and fluidization of the polymer and at least one secondary distribution plate located above the first distribution plate to promote segregation of polymer particles by size, the larger particles falling into the lower fluidization zone and the smaller particles being entrained up from the primary fluidization grid and through the secondary distribution grid into an upper reaction zone.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: September 5, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert James Jorgensen, Steven Paul Sawin