Patents by Inventor Hideki Nakagami

Hideki Nakagami 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).

  • Continuous casting process and apparatus for production of metallic hollow ingot
    Patent number: 4205716
    Abstract: Continuous casting process for the production of hollow ingot using an improved direct chill casting equipment having a molding system comprising a hollow mold and a movable platform, wherein at least one core and a pipe for introducing outer air are provided, said core being made from a refractory material unwettable with a molten metal and having a convergent taper at the side and an air runner for introducing outer air, which is packed with an air-permeable material, at the bottom, and said pipe for introducing outer air extending upwards from the air runner and passing through the core.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: June 3, 1980
    Assignee: Sumitomo Aluminum Smelting Company, Ltd.
    Inventors: Kou Nakahira, Hideki Nakagami, Junichi Koshiba