Patents by Inventor Hiroyasu Ohnishi

Hiroyasu Ohnishi 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).

  • System for detecting underground objects
    Patent number: 4831383
    Abstract: A system for detecting underground objects is disclosed wherein image data obtained through a deep range-migration correction and image data obtained through a shallow range-migration correction are combined so that data at the corresponding positions on both the image data at high level may mutually intensify, whereas other data may mutually weaken. The target spot on the thus combined image data is made sharp and provides sufficently high resolution.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: May 16, 1989
    Assignees: The Tokyo Electric Power Co., Inc., Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyasu Ohnishi, Tatsukichi Matsuura, Kouji Maeda, Yasuhiro Uekubo, Akio Jitumori, Teruo Usami