Patents by Inventor Takehisa Makino

Takehisa Makino 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 treating molten steel and apparatus therefor
    Patent number: 4298376
    Abstract: A method for treating molten steel utilizing an induction coil, a ladle, a treating vessel and at least one passage pipe interconnecting the ladle and the treating vessel which includes the steps of lifting up a part of the molten steel from the ladle to the treating vessel disposed over the ladle through adjustment of molten steel composition and/or degassing in the treating vessel, thereafter returning the molten steel to the ladle through the at least one passage pipe, circulating or reciprocating the molten steel between the ladle and the treating vessel while heating the molten steel by the induction coil disposed around the at least one passage pipe and operating the linear motor at a frequency of 50 to 60 cycles.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: November 3, 1981
    Assignee: Kobe Steel, Ltd.
    Inventors: Kiichi Narita, Takasuke Mori, Kenzo Ayata, Takehisa Makino