Patents by Inventor Tom E. Wessel

Tom E. Wessel 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).

  • Apparatus and process for devolatilization of high viscosity polymers
    Patent number: 4954303
    Abstract: A devolatilizer, especially suitable for high viscosity polymers, comprising a vacuum chamber into the top of which the polymer is introduced after having passed through a tubular or equivalent heat exchanger, with a low shear mixer located in the vacuum chamber and a pumping device for removing the devolatilized polymer from the bottom of the vacuum chamber. Devolatilization of high viscosity polymers is achieved in this apparatus and method without severe degradation.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: September 4, 1990
    Assignee: The Dow Chemical Company
    Inventors: Eugene R. Moore, Tom E. Wessel