Patents by Inventor Hiraoka Yuzuru

Hiraoka Yuzuru 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).

  • Lateral direction detection sonar
    Patent number: 5367498
    Abstract: The present invention relates to a PPI sonar for horizontally turning a transmitting and receiving transducer emitting and receiving ultrasonic signals in one direction within an azimuthal range in one angular direction and in the reverse angular direction to search the water in a sector form and for having the position of own ship defined at an off-centered point on the screen of an indicator to display underwater conditions in a corresponding wide sectorial display area.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: November 22, 1994
    Inventors: Yoshida Takashi, Watanabe Syoichi, Yamada Katsuo, Hamada Tokihiko, Hiraoka Yuzuru