Patents by Inventor Sadanari Muto

Sadanari Muto 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).

  • Camera for visual inspection
    Patent number: 4664520
    Abstract: A camera for visual inspection of defect on an object having a complicated shape is disclosed. This camera is provided with a reflecting mirror having two symmetrical reflecting surfaces to split incident light into two portions and direct them onto two linear image sensing devices mounted on inner surface of the camera body at separate positions. The received lights are converted into electric signals and after processing to obtain a difference signal, a signal indicating presence of a defect is obtained remarkably.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: May 12, 1987
    Assignee: NGK Insulators, Ltd.
    Inventors: Junichi Matsuo, Sadanari Muto