Patents by Inventor Takaatsu Nagai

Takaatsu Nagai 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).

  • Method for quantitative discharge of molten material
    Patent number: 4641319
    Abstract: In a method of intermittently charging a molten principal raw material and any supplementary material as needed to provide a specified raw material formulation into a melting furnace and continuously discharging a molten material therefrom, the discharge of the molten material is effected by determining the weight of the tiltable melting furnace, said weight changing with change of the raw materials and discharging of the molten material, computing the rate of change in weight of the molten material with respect to time from the determined weights of said furnace, and tilting said furnace to a position indicated by comparison of said computed rate of change in weight of the molten material with respect to time and the set rate of change in weight of the molten material with respect to time.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: February 3, 1987
    Assignee: Nippon Steel Corporation
    Inventors: Takaatsu Nagai, Masayuki Takada, Akira Sato, Mineo Imamura