Patents Assigned to Fimatec, Ltd.
  • Concrete containing aqueous slurry of ground calcium carbonate
    Patent number: 6402831
    Abstract: Concrete characterized by containing aqueous slurry of ground calcium carbonate which has a mean particle diameter of 0.5-3 micrometers produced by wet pulverization of the limestone. By adding fine powder of ground calcium carbonate, fluidity of the concrete is increased and workability thereof is improved.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: June 11, 2002
    Assignee: Fimatec, Ltd.
    Inventors: Haruya Sawara, Tadashi Yamauchi, Hidetoshi Morishita, Seiji Katayama, Yumiko Takase