Patents by Inventor Ryoichi Ishii, deceased

Ryoichi Ishii, deceased 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).

  • Ultrasonic fault detector
    Patent number: 4211118
    Abstract: An ultrasonic fault detector for inspecting the welds of a welded pipe comprises a casing in which contact medium is contained, an arm movable in the casing, a movable member rotatably secured to the arc, probe heads mounted on the movable member, and a pump for feeding the contact medium to the operating surface of the probe heads. The movable member is constructed to be dividable into two or more parts.
    Type: Grant
    Filed: May 16, 1978
    Date of Patent: July 8, 1980
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Yoshishige Sakurai, Hiroshi Yamada, Kuniharu Uchida, Kanekichi Suzuki, Ryoichi Ishii, deceased, by Kyoko Ishii, administrator