Patents by Inventor Shigeru Miyawaki

Shigeru Miyawaki 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).

  • Patent number: 5424026
    Abstract: The invention provides an apparatus for compressively molding cushioning material using a quadrangular cylindrical molding box having an end side closed by a receiver mold, whereas the other end of said molding box receives supply of dry raw material consisting of fiberized paper or pulp by a volume corresponding to several times the actual volume of a molded body. A compressive mold inserted from the other end of the molding box is shifted to one-end side of the molding box to compress supplied raw material between a receiver mold. Simultaneously, a core member is retreated to a predetermined position of said one-end side in association with the shifting movement of the compressive mold. As a result, the core portion having thin thickness and the interior of the core member can securely be compressed and molded with even density.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: June 13, 1995
    Assignees: Settsu Corporation, Hitachi Zosen Corporation
    Inventors: Masatoshi Tohbo, Shigeru Miyawaki, Koichi Yoshida, Seiichi Yonekawa, Kiyohisa Ueda, Katsuhiro Yamaji, Eiji Koyanagi, Masahiro Takeda, Hidetoshi Hirata
  • Patent number: 5344595
    Abstract: This invention provides a paper molded cushion having a sufficient shock absorbing ability without substantial deformation during the drying process even if the shape of the cushion is very complex. The process comprises the steps of mechanically fluffing waste paper or pulp, adding a proper amount of adhesive to the fluffed paper of pulp, mixing uniformly, casting the mixture in a mold having water drainage small apertures thereof, heating said mold with the mixture therein by dielectric heating or microwave heating, thereby drying the molded paper cushion to a predetermined water content level and taking out the molded paper cushion from the mold.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: September 6, 1994
    Assignee: Settsu Corporation
    Inventors: Shinji Aoki, Shigeru Miyawaki, Koichi Yoshida, Seiichi Yonekawa