Patents Assigned to Jureha Kagaku Kogyo Kabushiki Kaisha
  • Method for preparing carbon fibers
    Patent number: 4314981
    Abstract: The present invention relates to a method for preparing carbon fibers from a pitch by treating the pitch fibers spun from a pitch with a gaseous mixture of air and a gaseous oxidizing agent in an infusibilizing furnace divided into at least two chambers arranged in series and then carbonizing the thus treated pitch fibers into carbon fibers.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: February 9, 1982
    Assignee: Jureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tamotsu Miyamori, Hisatsugu Kaji, Iwao Kameyama, Michio Takahashi