Patents by Inventor Stuart F. Exell

Stuart F. Exell 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).

  • Cellular carbon beads and process for fabrication
    Patent number: 4237107
    Abstract: This invention concerns a cellular, spherical bead of organic, macromolecular polymer material which when carbonized in the solid state retains its original beaded shape and has a high carbon content and methods for making such beads of polymer and carbon.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: December 2, 1980
    Assignee: Battelle Memorial Institute
    Inventors: Jacques Gillot, Stuart F. Exell, Benno Lux