Patents by Inventor Susumu Onuma

Susumu Onuma 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).

  • Valve gate injection molding apparatus
    Patent number: 5378138
    Abstract: A valve gate injection molding apparatus, in which the gas produced within a heating probe is discharged through a gas discharge outlet groove from the base side of a valve pin, leak of the resin melt is prevented by flowing a cooling fluid for controlling the temperature to increase viscosity of the resin melt, and preventing overheat of the valve pin actuating assembly caused by heat conduction from the heated and pressurized resin melt.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: January 3, 1995
    Assignee: Seiki Kabushiki Kaisha
    Inventors: Susumu Onuma, Kin-ichi Yokoyama