Patents by Inventor Yoshihito Sugimoto

Yoshihito Sugimoto 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 improving machinability of titanium and titanium alloys and free-cutting titanium alloys
    Patent number: 5156807
    Abstract: The machinability of titanium or a titanium alloy is improved without adversely affecting the hot workability and fatigue strength or corrosion resistance by addition of P: 0.01-1.0% along with one or both of S: 0.01-1.0% and Ni: 0.01-2.0%, or along with S: 0.01-1.0%, Ni: 0.01-2.0%, and REM: 0.01-5.0%, on a weight basis.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: October 20, 1992
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Tatsuo Nagata, Wataru Takahashi, Manabu Nishimoto, Shiroh Kitayama, Yoshihito Sugimoto
  • Process of forming dispersions in titanium alloys by melting and precipitation
    Patent number: 5141574
    Abstract: A wear-resistant titanium alloy containing titanium carbides which are crystallized and/or precipitated and are dispersed in the .beta.-phase matrix is disclosed. The alloy may further comprise .alpha.-phase and/or additional hard particles dispersed in the .beta.-phase matrix.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: August 25, 1992
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Wataru Takahashi, Yoshihito Sugimoto, Mutsuo Nakanishi, Yoshiaki Shida, Minoru Okada
  • Wear-resistant titanium alloy and articles made thereof
    Patent number: 5068003
    Abstract: A wear-resistant titanium alloy containing titanium carbides which are crystallized and/or precipitated and are dispersed in the .beta.-phase matrix is disclosed. The alloy may further comprise .alpha.-phase and/or additional hard particles dispersed in the .beta.-phase matrix.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: November 26, 1991
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Wataru Takahashi, Yoshihito Sugimoto, Mutsuo Nakanishi, Yoshiaki Shida, Minoru Okada
  • Shield tunneling machine and method
    Patent number: 4165129
    Abstract: Shield tunneling machine and method which may minimize the variation in water- and earth-pressure at the tunneling face so as to hold the ground firm and to ensure the safe tunneling.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: August 21, 1979
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Sato Kogyo Kabushiki Kaisha
    Inventors: Yoshihito Sugimoto, Konosuke Miyata, Kanehiro Ishihara, Sachio Fujimoto, Tsunehiro Kakutani