Patents by Inventor Bunei Hamazaki

Bunei Hamazaki 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).

  • Position detecting device and method
    Patent number: 4688088
    Abstract: An improved method and device for detecting a position of a mark formed on an object, by providing plural peaks in an image density distribution, wherein the image of the object having the mark is picked up to provide an image signal which in turn is processed to provide an integrated image-density distribution of the image in a predetermined direction and wherein the position of the mark is detected on the basis of the plural peaks in the integrated image-density distribution.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: August 18, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Bunei Hamazaki, Naoki Ayata