Patents by Inventor Akira Naito

Akira Naito 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 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
  • Process for preventing growth of marine organisms on a substance using hydrogen peroxide
    Patent number: 4324784
    Abstract: A process for preventing growth of marine animals, i.e. shellfish, Polyzoa, and Hydrozoa on a surface, characterized by supplying hydrogen peroxide and/or a hydrogen peroxide-generating agent into sea water in contact with the surface is disclosed. Surfaces of apparatus and/or pipe constituting flow paths for sea water and plant utilizing sea water are kept clean by the process.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: April 13, 1982
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Akira Naito, Toru Hayakawa, Masakatsu Nakanishi, Sunao Ikuta, Shoichiro Kajiwara, Hitoshi Yamaguchi