Patents by Inventor Yoshiaki Sutou

Yoshiaki Sutou 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).

  • Metallic ingot for plastic working
    Patent number: 5989365
    Abstract: In a metallic ingot used as a forging stock, high dimensional accuracy, small dispersion of weight, good inner quality, and small radius of meniscus are required. In the metallic ingot fulfilling these requirements, the metallic melt 7 is completely filled the mold comprising a sprue 4 closed after pouring of the melt and is forcedly solidified at its bottom by the cooling plate 1. The crystal grains grow almost parallel to the rising direction of the upper surface of the melt 7. The ingot has no cutting surface on the casting surface.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: November 23, 1999
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Shigeru Yanagimoto, Masashi Fukuda, Yoshiaki Sutou, Takayuki Kato
  • Method for producing metallic ingot for plastic working
    Patent number: 5769147
    Abstract: In a metallic ingot used as a forging stock, high dimensional accuracy, small dispersion of weight, good inner quality, and small radius of meniscus are required. In the metallic ingot fulfilling these requirements, the metallic melt 7 is completely filled the mold comprising a sprue 4 closed after pouring of the melt and is forcedly solidified at its bottom by the cooling plate 1. The crystal grains grow almost parallel to the rising direction of the upper surface of the melt 7. The ingot has no cutting surface on the casting surface.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: June 23, 1998
    Assignee: Showa Denko Kabushikikaisha
    Inventors: Shigeru Yanagimoto, Masashi Fukuda, Yoshiaki Sutou, Takayuki Kato