Patents by Inventor Masao Toshida

Masao Toshida 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).

  • Screw for molding machine that prevents a wrapping phenomenon
    Patent number: 5735599
    Abstract: A screw for a molding machine comprises a feed zone, a compression zone and a metering zone. The metering zone 12 is provided with a screw element having an intermediate mixing element 12b and a forward end mixing element 12a, and the upstream side of the intermediate mixing element is composed of a deep flight channel screw, and the downstream side of the intermediate mixing element is composed of a shallow flight channel screw.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: April 7, 1998
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Junya Ishibashi, Yoshiharu Uchida, Masao Toshida, Kazuhiro Asai