Patents by Inventor Michael Zietek

Michael Zietek 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).

  • Transparent plastic composite
    Patent number: 9067389
    Abstract: The invention describes a transparent plastics composite composed of PMMA and TPU with excellent mechanical properties.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: June 30, 2015
    Assignee: Evonik Roehm GmbH
    Inventors: Werner Hoess, Michael Zietek, Michael Enders, Christian Eberle, Sven Schroebel, Klaus Albrecht, Rudolf Blass, Klaus Schultes, Arne Schmidt
  • TRANSPARENT PLASTIC COMPOSITE
    Publication number: 20090226730
    Abstract: The invention describes a transparent plastics composite composed of PMMA and TPU with excellent mechanical properties.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 10, 2009
    Applicant: EVONIK ROEHM GMBH
    Inventors: Werner Hoess, Michael Zietek, Michael Enders, Christian Eberle, Sven Schroebel, Klaus Albrecht, Rudolf Blass, Klaus Schultes, Arne Schmidt
  • Articles made of PMMA molding compound
    Patent number: 7456239
    Abstract: The invention relates to a moulding composition and to the mouldings which can be produced therefrom. Due to their good resistance in the hot water cycle test and in the hot-water/isopropanol test, the plastics mouldings have particularly good suitability for the production of sanitary components.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: November 25, 2008
    Assignee: Roehm GmbH & Co., KG
    Inventors: Alexander Theil, Michael Zietek, Heinrich Gaul, Hans-Juergen Kress, Thomas Hasskerl, Rudolf Blass, Werner Hoess
  • Articles made of pmma molding compound
    Publication number: 20050267250
    Abstract: The invention relates to a moulding composition and to the mouldings which can be produced therefrom. Due to their good resistance in the hot water cycle test and in the hot-water/isopropanol test, the plastics mouldings have particularly good suitability for the production of sanitary components.
    Type: Application
    Filed: July 25, 2003
    Publication date: December 1, 2005
    Applicant: ROEHN GBMH & CO. KG
    Inventors: Alexander Theil, Michael Zietek, Heinrich Gaul, Hans-Juergen Kress, Thomas Hasskerl, Rudolf Blass, Werner Hoess
  • Shaping tool for information carrier disc blanks
    Patent number: 6555195
    Abstract: The invention relates to a shaping tool for the injection molding or injection compression of information carrier disc blanks (11) made of polymethacrylate plastic which is suited as a component of an injection molding or injection compression machine. The shaping tool is comprised of two mold parts (1, 2), whereby one mold part (1) contains a bottom part (8) of a mold with the information data and, together with the second mold part (2), forms a cavity for the one information carrier blank and one sprue bush (4) for a sprue piece (5) in the tool having a concentrically positioned feed orifice (6). In addition, the tool comprises a impact cylinder (9) for shearing the sprue piece (5) and has an ejector pin (10). The invention is characterized in that the injection gap (SP) between the feed orifice (6) of the sprue piece (5) and the information carrier disc blank (11) is less than 0.3 mm.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: April 29, 2003
    Assignee: Roehm GmbH & Co. KG
    Inventors: Michael Zietek, Harry Schwarz, Klaus Albrecht, Rudolf Blass, Werner Hoess, Hans-Juergen Kress, Michael Wicker