Patents by Inventor Ono Masaki

Ono Masaki 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).

  • Hollow shaped molded article, hollow shaped molding process and hollow shaped molding device
    Patent number: 5948343
    Abstract: The invention relates to a hollow shaped molding process which comprises injecting a molten resin into a main cavity which has an injection port provided with a floating core at its one end and a sub-cavity at the other end through an openable communication port, injecting a compressed fluid from the injection port, moving the floating core toward the communication port, and discharging the resin into the sub-cavity through the communication port, wherein the resin positioned at the center is discharged into the sub-cavity by the moved floating core, and the floating core is moved into the sub-cavity through the communication port.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: September 7, 1999
    Assignee: RP Topla Limited
    Inventors: Katagiri Hiroki, Watanabe Mituo, Oziro Minoru, Akutu Hidetoshi, Ono Masaki, Iida Isao