Patents by Inventor Katsunori Ishitoya

Katsunori Ishitoya 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: 5961902
    Abstract: A multilayer article such as a door trim board is fabricated by the steps of extruding melted resin layers (13m), (12m) and (11m) respectively forming a soft skin material (13), a foamed soft intermediate layer (12) and a base member (11) in the form of a multilayer resin sheet from a die-head (40) of an extruding machine, supply the extruded multilayer resin sheet to a molding machine in such a manner that the resin layer for the skin material is placed on a lower molding die of the molding machine and molding the resin layers in the form of the multilayer article. The resin layer for the skin material consists of thermoplastic elastomer, the resin layer for the intermediate layer consists of ethylenic copolymer copolymerized with ethylene and at least radical copolymerizable acid anhydride, and the resin layer for the base member consists of olefinic resin.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: October 5, 1999
    Assignees: Araco Kabushiki Kaisha, Showa Denko Kabushiki Kaisha
    Inventors: Katsunori Ishitoya, Minoru Takaishi, Michihiro Okochi, Hideyuki Iwamoto, Sakuyoshi Nakagami, Kazufumi Tanaka
  • Patent number: 5804292
    Abstract: The invention provides a laminated article such as a door trim board capable of maintaining a bonding effect for a long period of time by integrally forming a base member and a skin member without forming the skin member in the shape of a sheet and without using an adhesive, and a manufacturing method of the laminated article by which reduction in the quantity of materials to be used and simplification of manufacturing steps are achieved. A porous base member (11) molded in the shape of a door trim board and a molten resin (12melt) supplied on the surface of the porous base member are pressed between a pair of molds (31, 32) so that the molten resin (12melt) is impregnated into the porous base member at least at the front surface thereof and hardened to form a skin member (12) on the porous base member (11). In the door trim board thus obtained, the resin forming the skin member (12) and the porous base member (11) are integrated by an anchor effect of resin with a reliable strength thereof retained.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: September 8, 1998
    Assignee: Araco Kabushiki Kaisha
    Inventors: Katsunori Ishitoya, Hiroyuki Kato, Yukio Ishihara, Kazunori Kuze, Yoshihiko Hiraiwa, Makoto Horiba
  • Patent number: 5401556
    Abstract: A molded article includes a laminated wood-based fibrous web molded into a desired shape by a compression molding operation. The laminated wood-based fibrous web includes a wood-based fibrous web base and a synthetic fiber scrim laminated to the web base, the web base being formed of a fiber composition mainly constituted of wood pulp, synthetic fibers and binder, the scrim being impregnated with a synthetic resin.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: March 28, 1995
    Assignee: Arako Kabushiki Kaisha
    Inventors: Katsunori Ishitoya, Yukio Ishihara, Takahisa Suzuki