Patents by Inventor Herbert Marzolph

Herbert Marzolph 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).

  • Process for separating and recovering residual monomers from aqueous suspensions of acrylonitrile polymers
    Patent number: 3980529
    Abstract: The invention relates to a process for the recovery of acrylonitrile and other monomers from an aqueous polymer dispersion by continuous distillation in a thin-layer evaporator under reduced pressure, condensation of the evaporated monomers in a condenser under the same or similar reduced pressure and subsequent condensation or absorption respectively of the monomer vapors which have not been condensed in the condenser at a higher pressure.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: September 14, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd Wilhelm, Karl Hurm, Rolf-Burkhard Hirsch, Artur Jaschke, Herbert Marzolph