Patents by Inventor Ryouzi Horie

Ryouzi Horie 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).

  • Method of inspecting a honeycomb structural body for purifying exhaust gases and apparatus used in the method
    Patent number: 5102434
    Abstract: A method of inspecting an alternately sealed honeycomb structural body is provided which can quickly, efficiently and accurately inspect presence of defects of the honeycomb structural body. The method comprises, flowing particulates in axial direction of the throughholes from one end surface to the other end surface of the honeycomb structural body, catching the particulates on a gas-permeable screen intimately mounted on the other end surface to form a figure of the particulates, and checking the figure to inspect for defects at internal partition walls and sealing portions of the honeycomb structural body.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: April 7, 1992
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshihiko Hijikata, Satoru Yamada, Ryouzi Horie