Patents by Inventor Toshimichi Takahashi

Toshimichi Takahashi 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 and apparatus for estimating disturbance acting on vehicle tired wheel based on wheel angular velocity and equation of state
    Patent number: 5531110
    Abstract: The invention is a method and apparatus wherein a disturbance acting on a tired wheel of a vehicle is estimated by a disturbance observer on the basis of the detected angular velocity of the wheel. In one form of the method, the wheel angular velocity is compensated for the disturbance, depending upon the amount of change of the wheel angular velocity caused by the disturbance. In another form of the method, the angular acceleration of the wheel as well as the disturbance is estimated by the observer, and the moment of inertia of the wheel is obtained according to a relationship between the estimated disturbance and angular acceleration of the wheel.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: July 2, 1996
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Hideki Ohashi, Hiroyuki Kawai, Hiroyoshi Kojima, Nobuo Hiraiwa, Katsuhiro Asano, Takaji Umeno, Toshimichi Takahashi
  • Alloys based on zirconium having proportional amount of tin, iron, chromium and oxygen
    Patent number: 4992240
    Abstract: A zirconium alloy containing on weight basis, 0.4-1.2% tin, 0.2-0.4% iron, 0.1-0.6% chromium, not higher than 0.5% of niobium and balance oxygen and zirconium, wherein the sum of weight proportions of tin, iron and chromium is in the range from 0.9 to 1.5%; and a zirconium alloy as above wherein the proportions, expressed by weight %, of tin X.sub.Sn, iron X.sub.Fe, chromium X.sub.Cr, niobium X.sub.Nb and oxygen X.sub.o satisfy the equation0.18 X.sub.Sn +0.15(X.sub.Fe +X.sub.Cr)+0.13X.sub.Nb +4.72X.sub.o .gtoreq.0.95.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: February 12, 1991
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Kazushi Komatsu, Toshiya Kido, Toshimichi Takahashi, Mitsuru Sugano, Shigemitsu Suzuki