Patents Assigned to SGL Carbon GmbH & Co.
  • Method, furnace shell, and furnace for rebaking and graphitizing carbon bodies
    Patent number: 6834072
    Abstract: A method rebakes and graphitizes pitch-impregnated carbon bodies in an encapsulated Castner-type lengthwise graphitization furnace in one step. A furnace shell is constructed of element modules and can carry out the method. A furnace utilizes the furnace shell. The oxygen content in the interior of the furnace is kept below 4% by volume. The method is carried out under atmospheric pressure or at pressures that differ only slightly from the atmospheric pressure.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: December 21, 2004
    Assignee: SGL Carbon GmbH & Co.
    Inventors: Johann Daimer, Stefan Gschwandtner, Franz Kalchschmid, Franz Kals, Walter Lhotzky, Franz Liebhart, Gerhard Putz, Hubert Putz