Patents by Inventor Ryuichi Jimbo

Ryuichi Jimbo 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).

  • Patent number: 6603562
    Abstract: A two-dimensional positioning apparatus for positioning an object in a two dimensional direction, wherein are provided a platen, a slider having two X-axis motors and sensors and a Y-axis motor and sensor disposed above the platen, a converter for providing signals to detect the X-axis position of the center point of the slider, a controller for feedback control of the slider in a X-axis direction and a yaw direction, and for feedback control in the Y-direction, and a converter circuit for converting output of the controller to propulsion commands to be supplied to the motors, wherein a limiter is provided to restrict one axis limits of the propulsion commands. In this manner, accuracy is improved and flexibility is increased.
    Type: Grant
    Filed: October 21, 2000
    Date of Patent: August 5, 2003
    Assignee: Yokogawa Electric Corporation
    Inventors: Yutaka Ono, Shigeru Hashida, Yutaka Koizumi, Fumio Kaiho, Yasuhito Kosugi, Ryuichi Jimbo, Atsufumi Kimura