Patents Assigned to Koa Denshi Kogyo Kabushiki Kaisha
  • Object confirming apparatus
    Patent number: 4276621
    Abstract: An object confirming apparatus receives ultrasonic wave pulses periodically transmitted from a transmitter and confirms them a plural number of times according to the periodicity of the transmitted pulses so that a confirming signal may be generated which is free from the influence of noise.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: June 30, 1981
    Assignee: Koa Denshi Kogyo Kabushiki Kaisha
    Inventors: Hideo Hiruma, Yukio Maruhashi