Patents by Inventor Gunter Matuszak

Gunter Matuszak 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 for the manufacture of dislocation-free monocrystalline silicon rods
    Patent number: 4722764
    Abstract: A method for crucible-free zone pulling of silicon monocrystalline rods is described. According to the invention, a polycrystalline silicon rod obtained by crucible pulling according to the Czochralski procedure is used in lieu of the polycrystalline silicon rod produced by vapor deposition.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: February 2, 1988
    Assignee: Wacker-Chemitronic Gesellschaft fur Elektronic-Grundstoffe mbH
    Inventors: Heinz Herzer, Wolfgang Hensel, Gunter Matuszak