Patents Assigned to Mitsui Mining Company
  • Carbon fiber-reinforced cement material and method for preparing same
    Patent number: 5308696
    Abstract: A method for preparing a carbon fiber-reinforced cement material is here disclosed which comprises the step of using, as a reinforcing material, a carbon fiber from which a gas has been removed by replacing the gas captured in the fiber with water. This method permits providing the carbon fiber-reinforced cement material having a large reinforcing effect by the fiber.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: May 3, 1994
    Assignees: Mitsui Mining Company, Limited and Kajima Corporation
    Inventors: Kazuhiko Hanashita, Koji Sakata, Shigeru Kanamaru, Toshiyuki Nawa, Kozo Toyama, Yoshikazu Takei, Tatsuo Suenaga, Yoshikazu Taniguchi