Patents by Inventor Yutaka Hiraga

Yutaka Hiraga 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).

  • Annular weir
    Patent number: 10562094
    Abstract: An annular weir is fixed at a bottom of a tundish and just under a long nozzle of a ladle in a continuous casting apparatus. The annular weir includes a cavity which has a substantially circular shaped transverse section. The cavity includes: an upper side opening configured to receive a stream of molten metal from an upper side through the long nozzle; an inner protrusion which is annular in shape and which extends toward an inner side from an upper end of an inner wall of the cavity; a first space on an inner side of the inner protrusion; and a second space which communicates with the first space 13a and which is on a lower side of the first space.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: February 18, 2020
    Assignees: NIPPON STEEL NISSHIN CO., LTD., KROSAKIHARIMA CORPORATION
    Inventor: Yutaka Hiraga
  • ANNULAR WEIR
    Publication number: 20180147624
    Abstract: An annular weir is fixed at a bottom of a tundish and just under a long nozzle of a ladle in a continuous casting apparatus. The annular weir includes a cavity which has a substantially circular shaped transverse section. The cavity includes: an upper side opening configured to receive a stream of molten metal from an upper side through the long nozzle; an inner protrusion which is annular in shape and which extends toward an inner side from an upper end of an inner wall of the cavity; a first space on an inner side of the inner protrusion; and a second space which communicates with the first space 13a and which is on a lower side of the first space.
    Type: Application
    Filed: January 24, 2018
    Publication date: May 31, 2018
    Inventor: Yutaka Hiraga