Patents Assigned to Toyo Tanson Co., Ltd.
  • Graphite sheet material
    Patent number: 4888242
    Abstract: A refractory heat-insulating graphite sheet material characterized in that the material comprises a graphite sheet.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: December 19, 1989
    Assignee: Toyo Tanson Co., Ltd.
    Inventors: Koichiro Matsuo, Kazuhiro Maekawa, Teruhisa Kondo