Patents by Inventor Isamu Ichijima

Isamu Ichijima 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).

  • Apparatus for detecting a surface flaw of a material at high temperature
    Patent number: 4118732
    Abstract: The present invention is an apparatus for detecting a surface flaw in hot metal including a particularly designed television camera, a shutter means and a control circuit which compensates the television camera's shading as well as the temperature difference among normal parts of the observed material.The apparatus makes it possible to conduct clear detection of a flaw on the surface of the hot material as it is so that yield loss at the time of scarfing can be avoided while heat energy can effectively be utilized.
    Type: Grant
    Filed: February 15, 1977
    Date of Patent: October 3, 1978
    Assignee: Nippon Steel Corporation
    Inventors: Isamu Ichijima, Seiichi Watanabe, Kazuo Miyagawa