Patents Assigned to Kawasaki Refractories Company Ltd.
  • Magnesia-calcium oxide refractories
    Patent number: 4923831
    Abstract: Disclosed are a magnesia-calcium oxide refractory product comprising (i) about 100 parts by weight of a refractory aggregate consisting essentially of about 20 to about 95% by weight of MgO and about 80 to about 5% by weight of CaO and (ii) about 0.5 to about 5 parts by weight of aragonite-type calcium carbonate, and a process for preparing the same.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: May 8, 1990
    Assignee: Kawasaki Refractories Company Ltd.
    Inventors: Nobuyuki Uzaki, Hiroaki Ishii, Ichiro Tsuchiya, Yukio Oguchi, Tatsuo Kawakami