Patents by Inventor Hans-Gunter Fellmann

Hans-Gunter Fellmann 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).

  • Apparatus for fusing a solid layer of electrically conductive material
    Patent number: 5479438
    Abstract: In a melting crucible (3) a central bottom portion (27) is formed of a plurality of palisades (5) and is shaped so that the palisades together form a vessel or a pot (7) having a centrally disposed spout or outlet (8). Two independently powered induction coils (10, 11) are provided, one coil (10) externally surrounding the collar or upper part of the central bottom portion (27), and the other coil (11) externally surrounding the spout (8). The palisades (5) are separated from one another by individual gaps (6) running radially outwardly from the center, while the electromagnetic field of at least the upper coil (10) acts on the charge contained in the melting crucible through the gaps (6).
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: December 26, 1995
    Assignee: Leybold Durferrit GmbH
    Inventors: Mathias Blum, Alok Choudhury, Hans-Gunter Fellmann, Wilfried Goy, Franz Hugo, Felix Muller, Wolfgang Schwarz, Hardy Weisweiler