Patents by Inventor Yujiro Ueda

Yujiro Ueda 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).

  • Convertor pressure control device in a convertor waste gas disposing device
    Patent number: 4767103
    Abstract: A converter pressure control device for use in a converter waste gas disposing device wherein a calculator determines the difference between the pressure in a converter and atmospheric pressure and sets an operating parameter according to the detected difference. A pressure controller generates a control signal in accordance with the operating parameter and the difference in converter pressure and a predetermined value. The control signal is used to operate a damper to control the flow of waste gas through the converter.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: August 30, 1988
    Assignees: Nippon Steel Corporation, Fuji Electric Co., Ltd.
    Inventors: Nobuhiro Sakanashi, Toru Yoshida, Yujiro Ueda, Katsumi Hachiga, Shigeharu Kawai
  • Method and apparatus for measuring slag-foam conditions within a converter
    Patent number: 4749171
    Abstract: A method and apparatus for directly observing the slag-foaming conditions in a vessel interior.A device for observing the vessel interior light is disposed in a throughhole extending through the side wall of a top-blowing or top- and bottom-blowing converter to reach the vessel interior. The converter operation can be carried out at a high accuracy on the basis of this observation.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: June 7, 1988
    Assignee: Nippon Steel Corporation
    Inventors: Keizi Arima, Yujiro Ueda, Toru Yoshida
  • Method for operating a converter used for steel refining
    Patent number: 4651976
    Abstract: A method for operating a converter on the basis of a direct observation of the slag-forming conditions in a vessel interior.A device for observing the vessel-interior light is disposed in a throughhole extending through the side wall of a top-blowing or top- and bottom-blowing converter to reach the vessel interior. The converter operation can be carried out at a high accuracy of the slag-amount control on the basis of this observation.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: March 24, 1987
    Assignee: Nippon Steel Corporation
    Inventors: Keizi Arima, Yujiro Ueda, Toru Yoshida, Hiroshi Narita