Patents by Inventor Lenoid Gorbunov

Lenoid Gorbunov 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).

  • Process and apparatus for producing a silicon single crystal
    Patent number: 7771530
    Abstract: A process for producing a silicon single crystal is by pulling the single crystal from a silicon melt which is contained in a crucible with a diameter of at least 450 mm, above which a heat shield is arranged. The single crystal being pulled has a diameter of at least 200 mm. The silicon melt is exposed to the influence of a traveling magnetic field which exerts a substantially vertically oriented force on the melt in the region of the crucible wall. There is also an apparatus which is suitable for carrying out the process.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: August 10, 2010
    Assignee: Siltronic AG
    Inventors: Janis Virbulis, Wilfried Von Ammon, Erich Tomzig, Yuri Gelfgat, Lenoid Gorbunov