Patents by Inventor Syoji Anezaki

Syoji Anezaki 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).

  • Steel making process and apparatus
    Patent number: 4328030
    Abstract: A process and apparatus for making steel in a basic oxygen furnace by the top-blowing of pure oxygen and the bottom-blowing of a gas mainly composed of carbon dioxide are disclosed, in which a waste gas discharged from said basic oxygen furnace is utilized as the only source of the gas to be blown into a molten metal.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: May 4, 1982
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yasuyuki Tozaki, Minoru Ueda, Takeyuki Hirata, Syoji Anezaki
  • Steel making process
    Patent number: 4292073
    Abstract: A process for making carbon steel and low-alloy steel in a basic oxygen furnace is disclosed, which comprises preparing a molten metal suitable for producing the steel in said basic oxygen furnace, carrying out the top-blowing of oxygen gas and bottom-blowing of carbon dioxide gas and then tapping the resulting molten steel. The top-blowing oxygen gas is injected through a lance onto the molten metal at an outlet velocity of Mach 0.8-2.0.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: September 29, 1981
    Assignee: Sumitomo Metal Industries, Inc.
    Inventors: Katsukiyo Marukawa, Syoji Anezaki, Seiichi Masuda
  • Production of carbon steel and low-alloy steel with bottom blowing basic oxygen furnace
    Patent number: 4280838
    Abstract: A method of producing carbon steel and low-alloy steel in a basic oxygen furnace is disclosed, in which a blow of the bottom-blowing gas predominantly comprised of carbon dioxide is introduced into a molten metal through at least one nozzle provided in the bottom or side wall of said basic oxygen furnace at least partly during the period of time from the beginning of blowing to the tapping of the melt, and the flow rate of the bottom-blowing gas is 1/200 - 9/100 the rate of oxygen impinged upon the melt through a lance.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: July 28, 1981
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Katsukiyo Marukawa, Isao Yamazaki, Syoji Anezaki, Tsutomu Kajimoto
  • Automatic molding apparatus with means for controlling pouring rate
    Patent number: 4019562
    Abstract: In an automatic molding apparatus, a Doppler speed meter is used to detect the rising speed of molten metal within a mold, and a nozzle stopper attached to a ladle in which the molten metal is contained is actuated in response to a difference between a detected speed signal and a speed pattern signal to control the opening of the nozzle of the ladle whereby the rising speed of the molten metal fed from the ladle to the mold through the nozzle can be controlled in accordance with an optimum molding velocity pattern.
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: April 26, 1977
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Toshio Shiraiwa, Sumio Kobayashi, Katsukiyo Marukawa, Syoji Anezaki