Patents by Inventor Teruhiko So

Teruhiko So 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).

  • Vaccum refining method utilizing induction heater around a ladle in a vacuum container
    Patent number: 5160531
    Abstract: A vacuum refining method for refining a mass of molten metal which is obtained from a steel-making furnace or a steel-making secondary smelting furnace, which method includes the steps of: pouring the molten metal into a ladle; setting the ladle inside an induction heater which is provided in an enclosed container; evacuating the enclosed container; and induction-heating the molten metal in the ladle by the induction heater while the enclosed container is kept under vacuum, so as to refine the molten metal. An apparatus for practicing this refining method is also disclosed.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: November 3, 1992
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Koreaki Koizumi, Teruhiko So, Tetsuya Satio