Patents by Inventor Toshimi Kumakura

Toshimi Kumakura 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).

  • Omni range inclino-compass
    Patent number: 5287628
    Abstract: A solid-state omni range incline-compass having a gravity sensor and a geomagnetic flux sensor provided on, each of three orthogonal axes established on a moving body a unit for generating a mathematic horizontal plane by making a gimbal mechanism as a mathematic equation on the basis of outputs from the gravity sensor located on each of the three orthogonal axes and a unit for calculating an azimuth angle of the moving body on the basis of two orthogonal axes on the mathematic horizontal plane.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: February 22, 1994
    Assignee: Takao Yamaguchi
    Inventors: Takao Yamaguchi, Hajime Nishizawa, Toshimi Kumakura