Patents by Inventor Kazushi Kishigami

Kazushi Kishigami 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: 6580743
    Abstract: A stave cooler used for cooling a furnace wall of a metallurgical furnace such as a blast furnace, having a structure in which cooling pipes to cool a metal base are cast on the side opposite the furnace interior side of the metal base and a heat resistant steel plate having openings or a lamination of heat resistant steel plates having openings is cast, in a prescribed thickness, in the furnace interior side surface of the metal base. It is acceptable to form the lamination suitably into a rectangular parallelepiped and cast it, in a plurality, in the furnace interior side of the metal base. The wear rate of the furnace interior side surface of the stave cooler is small, and its structure prevents the heat resistant steel plate(s) from falling out by thermal expansion of the stave cooler proper or wearing locally.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: June 17, 2003
    Assignee: Nippon Steel Corporation
    Inventors: Mitsuji Hirata, Kazushi Kishigami
  • Patent number: 5421963
    Abstract: Coke feed device with housing (6) for a coke dry cooling installation which is allocated to a cooling shaft (41) and consists of a stationary hopper (1) with an extraction line (9), a movable hopper (2), a movable, liftable and lowerable cooling shaft closure (8) and the housing (6) containing the movable hopper (2) and the cooling shaft closure (8) which are arranged on a joint chassis (22) running on rails (49). The movable hopper (2, 200, 201) is fitted with a distribution bell (3, 4) and a liftable and lowerable sealing ring (11) and the movable cooling shaft closure (8) fitted with a sealing ring (55) is integrated into a lifting and lowering device (15) and the housing (6, 600, 601) takes the form of a hood clear of the floor or with apertures in the walls (45, 450, 451, 46, 460, 461) for a limited secondary air supply.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: June 6, 1995
    Assignees: Ruhrkohle Aktiengesellschaft, Nippon Steel Corporation
    Inventors: Wilhelm Stewen, Heinz Opdenwinkel, Norbert Dunker, Naoto Yasukouchi, Kazushi Kishigami