Patents by Inventor Hirohide Iwase

Hirohide Iwase 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).

  • Shock absorber controller
    Patent number: 4756549
    Abstract: This controller controls a varible damping force shock absorber taking the cycle time and the oscillating phase of the body vibration. The controller increases the damping force when the body is moving toward its mean position. Before that, the damping force is kept weak so that the body vibration is hastened to become moving toward the mean position. Some criteria for determining that the body is moving toward its mean position are proposed.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: July 12, 1988
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryuichi Kurosawa, Hirohide Iwase, Yukio Yamamoto, Ryushi Tanaka, Takashi Shirasu, Susumu Oda
  • Method for evaluating surges of motor vehicles
    Patent number: 4169370
    Abstract: Root mean squares are obtained for the amplitude produced within a given period of time in the surges within such frequency scope as allows the human sense to perceive them easily among the surges of a variety of frequencies which occur in a motor vehicle during running. The magnitude of the squares obtained is substantially coincident with that of the surges felt by the human sense.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: October 2, 1979
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hirohide Iwase, Yukio Maeda, Tatsuo Sugitani