Patents by Inventor Naruhiko ONISHI

Naruhiko ONISHI 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).

  • Nonwoven fabric structure and method for producing the same
    Patent number: 10655256
    Abstract: Provided is a nonwoven fabric structure containing an odd-shaped fiber. The odd-shaped fiber has bubbles inside and has a cross-sectional shape that is an irregular, non-circular cross-section. Further, it is preferable that the cross-sectional shape of the odd-shaped fiber changes in the fiber length direction, the odd-shaped fiber has a crystallinity of 40% or less, and the odd-shaped fiber is made of at least two kinds of thermoplastic resins. It is also preferable that that the nonwoven fabric structure contains a heat fusible fiber, the odd-shaped fiber is present in the form of a net-like fiber sheet, and the odd-shaped fiber is in the form of short fibers. In addition, a method for producing such a nonwoven fabric structure is a method in which a thermoplastic resin containing a foaming agent is extruded through a slit die to give an odd-shaped fiber having bubbles inside, followed by three-dimensional shaping.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: May 19, 2020
    Assignees: TEIJIN FRONTIER CO., LTD., UNISEL CO., LTD.
    Inventors: Takeya Dei, Atsushi Suzuki, Naruhiko Onishi, Noboru Watanabe, Yasuyuki Yamazaki, Hironori Gouda, Yoshiyuki Tansei
  • NONWOVEN FABRIC STRUCTURE AND METHOD FOR PRODUCING THE SAME
    Publication number: 20150345055
    Abstract: Provided is a nonwoven fabric structure containing an odd-shaped fiber. The odd-shaped fiber has bubbles inside and has a cross-sectional shape that is an irregular, non-circular cross-section. Further, it is preferable that the cross-sectional shape of the odd-shaped fiber changes in the fiber length direction, the odd-shaped fiber has a crystallinity of 40% or less, and the odd-shaped fiber is made of at least two kinds of thermoplastic resins. It is also preferable that that the nonwoven fabric structure contains a heat fusible fiber, the odd-shaped fiber is present in the form of a net-like fiber sheet, and the odd-shaped fiber is in the form of short fibers. In addition, a method for producing such a nonwoven fabric structure is a method in which a thermoplastic resin containing a foaming agent is extruded through a slit die to give an odd-shaped fiber having bubbles inside, followed by three-dimensional shaping.
    Type: Application
    Filed: September 5, 2013
    Publication date: December 3, 2015
    Applicants: UNISEL CO., LTD., TEIJIN LIMITED
    Inventors: Takeya DEI, Atsushi SUZUKI, Naruhiko ONISHI, Noboru WATANABE, Yasuyuki YAMAZAKI, Hironori GOUDA, Yoshiyuki TANSEI