Patents by Inventor Kiyosi Uemura

Kiyosi Uemura 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).

  • Gate of mold for injection molding machine
    Patent number: 4171941
    Abstract: A gate of a mold for an injection molding machine comprises a valve cone having a circular cone shape or a pyramid shape and a valve seat corresponding to the valve cone wherein the valve cone is pushed toward the valve seat by a spring in the direction reverse to the injecting direction.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: October 23, 1979
    Assignee: Osaka City
    Inventors: Akira Yotsutsuji, Seiichi Ueda, Kiyosi Uemura