Patents by Inventor Yoshikazu Takei

Yoshikazu Takei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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