Patents by Inventor Ernest Walter Schäfer

Ernest Walter Schäfer 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 device for melting glass using an induction-heated crucible with cooled crust
    Patent number: 7444837
    Abstract: A method and an apparatus for the rapid melting of glasses in a skull crucible is provided. The method and apparatus introduce high-frequency energy into the contents of the crucible by means of a coil arrangement surrounding the skull crucible, in order to heat the melt, and the batch is laid and the molten glass discharged in the upper region of the crucible, and undissolved constituents of the batch are retained by means of a cooled bridge which is immersed in the melt. The glass is taken off above the coil arrangement and is fed for further processing without flowing through the coil region.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: November 4, 2008
    Assignee: Schott AG
    Inventors: Hildegard Römer, Michael Leister, Uwe Kolberg, Karl Mennemann, Guido Räke, Ernest Walter Schäfer, Sybill Nüttgens, Volker Ohmstede