Patents by Inventor Yotaro Ono

Yotaro Ono 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: 4887800
    Abstract: A tuyere for a blast furnace comprises water-cooled tuyere; and a burner removably mounted inside the water-cooled tuyere to burning pulverize coal. The burner comprises an inner pipe, an intermediate pipe and an outer pipe which are concentrically arranged. The inside of the inner pipe is used for a pulverized coal path, an oxygen feed path being in between the inner pipe and the intermediate pipe and a flame temperature control gas feed path in between the intermediate pipe and the outer pipe. The burner is equipped with a water-cooled jacket outside of the top end of the burner.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: December 19, 1989
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Hirohisa Hotta, Yotaro Ono, Masahiro Matsuura