Patents by Inventor Tokuzo Ikeda

Tokuzo Ikeda 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).

  • Process for producing melt-blown thermoplastic articles
    Patent number: 4442062
    Abstract: A process and apparatus are provided for the production of a non-woven fabric by melt-blowing wherein one or more yarns, e.g. monofilaments, are added or charged into the fabric stream between the extruder and collector by means of a supporting and drawing pressure gas stream. In one embodiment means are provided to regulate flow of the gas stream. In another embodiment means are provided to reciprocate or to rotate through a small arc the one or more charging means.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: April 10, 1984
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Shigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano
  • Artificial leathers
    Patent number: 4434205
    Abstract: An artificial leather is made by impregnating a special nonwoven web substrate with an elastic polymer material. In another embodiment the substrate comprises a nonwoven fabric laminated to a woven or nonwoven fabric.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: February 28, 1984
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Shigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano
  • Nonwoven fabrics
    Patent number: 4409282
    Abstract: A bulky nonwoven fabric comprises fine fibers forming thin intertwined layers extending between one surface of the fabric and the other surface, that is, the layered fibers run in the direction of thickness of the fabric. The nonwoven fabric of thermoplastic resin is prepared by a melt-blowing process utilizing a drum collector and cooperating nip-roll. If desired the fiber and gas stream may be contacted with fine liquid drops.
    Type: Grant
    Filed: July 22, 1982
    Date of Patent: October 11, 1983
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Shigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano
  • Process for the production of a nonwoven fabric
    Patent number: 4375446
    Abstract: A process for producing a thermoplastic nonwoven fabric having a uniform thickness and optionally napped fibers according to a melt blowing method, which comprises blowing a fiber stream consisting of melt blown fibers and a gas at a high speed onto a plate within a valley-like fiber-collecting zone formed by two plates having a large number of pores, to form a uniform nonwoven fabric without scattering fibers.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: March 1, 1983
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Shigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano
  • Die for a melt blowing process
    Patent number: 4295809
    Abstract: In an improved die-nose assembly for a melt-blowing process wherein molten resin is extruded from a series of die-holes while heated gas is blown out through slots on either side of the die nose associated therewith, spacers which are movable widthwise of the die assembly are provided in the gas slots to provide effective uniformity in the gas streams across the width of the die.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: October 20, 1981
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Takashi Mikami, Shigeo Fujii, Shuji Okano, Tokuzo Ikeda
  • Melt blowing apparatus
    Patent number: 4238175
    Abstract: A process and apparatus are provided for the production of a non-woven fabric by melt-blowing wherein one or more yarns, e.g. monofilaments, are added or charged into the fabric stream between the extruder and collector by means of a supporting and drawing pressure gas stream. In one embodiment means are provided to regulate flow of the gas stream in another embodiment means are provided to reciprocate or to rotate through a small arc the one or more charging means.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: December 9, 1980
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Shigeo Fujii, Tokuzo Ikeda, Takashi Mikami, Shuji Okano