Patents by Inventor Wolfgang W. Neumann

Wolfgang W. Neumann 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).

  • Additive-charged porous carrier material
    Patent number: 5496865
    Abstract: The pourable porous carrier material is produced from at least one thermoplastic basic polymer with additives incorporated in the porous structure.First suitable foaming agents are added to the basic polymer, the mass is melted, mixed before and/or after melting. The mixture is then preferably extruded and cooled to form a pourable porous carrier material.At least one additive is added to the porous carrier material and mixed with this at a temperature (T.sub.M) below the melting point of the basic polymer but above the melting point of the additive.The porous carrier material has preferably ellipsoid pores which are brought into their longitudinal form during extrusion.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: March 5, 1996
    Assignee: Brugg Kabel AG
    Inventors: Ulrich Heese, Renato Salvel, Wolfgang W. Neumann