Patents Assigned to Advanced Ceramico Corporation
  • Method for protecting a graphite chuck for a starter filament in the manufacture of polycrystalline silicon
    Patent number: 5277934
    Abstract: The present invention relates to a method for forming a uniform protective outer coating of pyrolytic graphite on a graphite chuck which is used for supporting a started filament in the manufacture of carbon free polycrystalline silicon.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: January 11, 1994
    Assignee: Advanced Ceramico Corporation
    Inventors: Michael H. Gilbert, John B. Hedge, Paul J. Walsh