Patents by Inventor Masayuki Sagoi

Masayuki Sagoi 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).

  • Perpendicular magnetic-recording medium
    Patent number: 4629660
    Abstract: A perpendicular magnetic-recording medium wherein an amorphous alloy layer of nickel and phosphorus is formed on a disc substrate; the surface of the alloy layer is smoothed with high precision; and a ferromagnetic Co-based perpendicular magnetic-recording layer is formed on the smoothed surface of the alloy layer.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: December 16, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Masayuki Sagoi, Reiji Nishikawa
  • Titanium-based alloy having high mechanical strength
    Patent number: 4253873
    Abstract: A titanium-based alloy of a high mechanical strength, which provides an excellent material of, particularly turbine blades, comprising 2.0 to 5.0% by weight of aluminum, 1.0 to 9.0% by weight of molybdenum, 6.1 to 9.0% by weight of chromium, traces of impurities, and titanium constituting the balance. The alloy may further contain 0.05 to 0.2% by weight of silicon and/or 0.001 to 0.05% by weight of boron, as required.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: March 3, 1981
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Masayuki Sagoi, Masayuki Itoh, Masami Miyauchi, Osamu Watanabe