Patents by Inventor Peter Nikolaus Lay

Peter Nikolaus Lay 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).

  • Continuous production process of expandable styrene polymer beads
    Patent number: 5905096
    Abstract: A continuous process for preparing bead-form expandable styrene polymers in which the styrene is prepolymerized in bulk to a conversion of 10 to 80%, the prepolymer is dispersed in liquid form in an aqueous phase in the presence of suspension stabilizers, and the polymerization of the prepolymer is completed in an aqueous suspension to a residual styrene content of less than 2000 ppm.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: May 18, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Nikolaus Lay, Swen Ruck, Michael Schiessl, Michael Witt, Hans Dieter Zettler, Michael Baumgartel, Gerhard Dembek, Klaus Hahn, Jan Holoch, Wolfram Husemann, Knut Kaempfer