Patents by Inventor Hans G. Friedrich

Hans G. Friedrich 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 and apparatus for producing an optically uniform, transparent coating, layer, film or sheet from a mixture of components
    Patent number: 4590030
    Abstract: A process and apparatus for producing a homogeneous and highly transparent sheet or film from a mixture of a plurality of components which comprises mixing the combined reaction components and depositing the reaction mixture on a molding substrate where the reaction is carried out in a layer thereon, wherein the combined reaction components are mixed, first, in a static mixer and, immediately thereafter, in a dynamic mixer.The invention can be advantageously applied to the manufacture of polyurethane sheets which can be employed in laminated glass sheets.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: May 20, 1986
    Assignee: Saint-Gobain Vitrage
    Inventors: Manfred Gillner, Hans G. Friedrich, Christian Grau, Richard Crumbach, Heinz Scholl, Christian Hiemenz