Patents by Inventor Kazutoki Nakao

Kazutoki Nakao 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 mold for billet
    Patent number: 6112805
    Abstract: Recess portions each comprising one or a plurality of transverse grooves or a large number of dimples are disposed below the lowermost position of a meniscus under a steady operation state within a distance of 200 mm on the inner peripheral surface of the casting mold so that a solidified shell is gradually cooled and the cooling capacity of each inner surface of the casting mold is substantially inform.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: September 5, 2000
    Assignee: Nippon Steel Corporation
    Inventors: Masatsugu Uehara, Toshiki Sato, Teruo Fujinaga, Kazutoki Nakao
  • Continuous casting method for billet
    Patent number: 6024162
    Abstract: To provide a continuous casting method for a billet capable of stable casting without causing rhomboidity or side periphery deformation in the billet produced by continuous casting, in a casting mold used for this method, recess portions each comprising one or a plurality of transverse grooves or a large number of dimples are disposed below the lowermost position of a meniscus under a steady operation state within a distance of 200 mm on the inner peripheral surface of the casting mold so that a solidified shell is gradually cooled and the cooling capacity of each inner surface of the casting mold is substantially uniform.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: February 15, 2000
    Assignee: Nippon Steel Corporation
    Inventors: Masatsugu Uehara, Toshiki Sato, Teruo Fujinaga, Kazutoki Nakao