Patents by Inventor Wilhelm Hertlein

Wilhelm Hertlein 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 dosed removal molten metal out of a melt vessel
    Patent number: 5131452
    Abstract: The volume of melt within the ladle dipper is maintained essentially unchanged in its position relative to the volume of melt remaining in the holding crucible during the ladling operation in order to avoid undesirable turbulence and the formation of foam in the melt.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: July 21, 1992
    Assignee: Alcan Deutschland GmbH
    Inventors: Georg Bilz, Hans Lammermann, Wilhelm Hertlein, Winfried Grabietz