Patents by Inventor Noboru Komatsubara

Noboru Komatsubara 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).

  • Patent number: 6288001
    Abstract: A graphite-containing monolithic refractory material comprises at least one component selected from alumina and alumina-magnesia spinel, which are divided into selected particle size regions, artificial graphite having a selected average particle size, and pitch powder. The refractory material may optionally comprise a selected amount of silicon carbide having a selected average particle size. The graphite-containing monolithic refractory material exhibits excellent casting workability at a low moisture content, and both excellent corrosion resistance and spalling resistance. The refractory material is suitable as a casting monolithic refractory material for lining a topedo ladle car.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: September 11, 2001
    Assignee: Kawasaki Steel Corporation
    Inventors: Yoshisato Kiyota, Masato Kumagai, Masao Nanbu, Shigenobu Takata, Masakazu Iida, Noboru Komatsubara, Toyohide Yamaguchi
  • Patent number: 6156688
    Abstract: A repairing material for the bricks of the carbonizing chamber in a coke oven is obtained by compounding mortar as a main component with a powder comprising 70-100 wt. % of a Co compound, Ni compound, and/or Al compound and 0-30 wt. % of at least one compound selected from among the compounds of Ca, Mg, Zn, Sr, Ba, Fe, V, Pb, Cu, and Ti, and a liquid formed of water, B, P, and at least one member selected from among Si, Na, and K. A method for repairing includes hot applying the repairing material to portions of the bricks of the carbonizing chamber in the coke oven which are in need of repair.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: December 5, 2000
    Assignees: Kawasaki Steel Corporation, Kawasaki Refractories Co., Ltd., Taiho Industries Co., Ltd.
    Inventors: Takeshi Ando, Michio Homma, Shinjiro Baba, Tadakatsu Kishi, Noboru Komatsubara, Shigeru Nakai, Teruo Onozawa, Kazuma Hori