Patents by Inventor Karl-Heinz Krenn

Karl-Heinz Krenn 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).

  • METHOD AND APPARATUS FOR THE TEMPERATURE-CONTROLLED SHAPING OF HOT-ROLLED STEEL MATERIALS
    Publication number: 20100187291
    Abstract: The invention relates to a method for shaping sheet steel. In said method, a blank is produced from the sheet steel, the blank is inserted into a shaping tool, and the shaped workpiece is produced from the blank in a one-stage process by means of the shaping tool. Before being shaped, the blank is heated to such a degree that the steel does not undergo any phase transition and the blank is shaped in the ferritic, pearlitic, or bainitic range without exceeding the eutectoid temperature or the recrystallization temperature. The invention also relates to an apparatus for carrying out said method.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 29, 2010
    Applicant: VOESTALPINE ANARBEITUNG GMBH
    Inventors: Wolfgang Kriegner, Hans-Jörg Kirchweger, Karl-Heinz Krenn