Patents by Inventor Youji Ao

Youji Ao 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).

  • Apparatus for continuous casting
    Patent number: 5743323
    Abstract: A continuous casting apparatus comprises continuously supplying molten metal from a tundish to a cooled mold having an inlet and an outlet at least through a break ring, forming a cast section by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface, and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and being soluble in the molten metal is invariable supplied to the entirety of the contact area of the mold and the break ring.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 28, 1998
    Assignees: Nippon Steel Corporation, Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Haruo Ohguro, Toshihiro Kosuge, Katsuhiko Kawamoto, Ryuuzou Hanzawa, Shogo Matsumura, Hiroyuki Kawai, Hiroyuki Nakashima, Yukio Morimoto, Youji Ao, Tsutomu Fujii, Hideo Kaneko, Hatsuyoshi Kumashiro
  • Method and apparatus for continuous casting
    Patent number: 5335715
    Abstract: A continuous cast method comprises continuously supplying molten metal from a tundish through a break ring to a cooled mold having an inlet and an outlet. A cast section is formed by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and soluble in the molten metal is constantly supplied to the entirety of the contact area of the mold and the break ring.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: August 9, 1994
    Assignees: Nippon Steel Corporation, Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Haruo Ohguro, Toshihiro Kosuge, Ryuuzou Hanzawa, Shogo Matsumura, Hiroyuki Kawai, Youji Ao, Tsutomu Fujii, Hideo Kaneko, Hatsuyoshi Kumashiro