Patents by Inventor Tetsuji Kodama

Tetsuji Kodama 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).

  • Charged particle guide apparatus and image viewing apparatus for charged particle microscope using the same
    Patent number: 5811805
    Abstract: An electron-microscope image viewing apparatus capable of measuring of a moving speed or a vibration frequency of an atomic structure, a magnetic structure, an electric structure or the like of a specimen even when the structure changes at a high rate.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: September 22, 1998
    Assignees: Research Development Corporation of Japan, Hitachi, Ltd., Hamamatsu Photonics K.K.
    Inventors: Nobuyuki Osakabe, Junji Endo, Tetsuji Kodama, Tsuneyuki Urakami, Hiroshi Tsuchiya, Shinji Ohsuka
  • Position control method
    Patent number: 4645993
    Abstract: A position control method for aligning a workpiece in a machining apparatus. An alignment pattern, such as a diamond, is provided on the surface of the workpiece. The alignment pattern and the surrounding region are sensed by an image pickup television camera, the output of which is converted to binary form. From the binary data, the central point of the pattern is calculated. The difference between this central point and a reference point is then determined, and the result used to control the position of the workpiece via a positioning mechanism.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: February 24, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Naito, Tetsuji Kodama, Hideki Tsuruse, Hironobu Tsutsumi