Patents by Inventor Hans P. Muhlbauer

Hans P. Muhlbauer 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).

  • Copolymer of the tetrafluoroethylene-ethylene type having a core-shell particle structure
    Patent number: 5506281
    Abstract: Aqueous dispersions of colloidal particles comprising a particle core and at least one particle shell are obtained by preparing a seed dispersion by copolymerization of tetrafluoroethylene, ethylene and, if desired, further fluoroolefinic comonomers and then continuing the polymerization by supplying the monomers for the particle shell, where the particle shell is a polymer having a melting point at least 20.degree. C. lower than that of the particle core, and where the volume of the particle shell is from 1 to 26% by volume of the total volume. These dispersions can be coagulated or spray dried to give powders which are suitable for the production of porous structures.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: April 9, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Hans P. Muhlbauer