Patents by Inventor Tadashi Nakajoh

Tadashi Nakajoh 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).

  • Control method of injection molding machine
    Patent number: 4879077
    Abstract: A control method of an injection molding machine is implemented so that a screw is rotated at a predetermined speed in the reverse direction to a rotational direction in a measuring process in the whole or partial stroke of an injection process in the case where an in-line screw type injection molding machine is controlled. With the control method, when the screw is moved forward in the injection process, apparent position of a ridge of the screw in a predetermined position of a heating cylinder becomes stationary.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: November 7, 1989
    Assignee: Nissei Jushi Kogyo Kabushiki Kaisha
    Inventors: Junichi Shimizu, Tadashi Nakajoh