Patents by Inventor Masato Iizumi

Masato Iizumi 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).

  • Soundproof panel and soundproof structure
    Patent number: 8387747
    Abstract: A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: March 5, 2013
    Assignee: Kuraray Co., Ltd.
    Inventors: Masaru Koike, Tomoaki Kimura, Masato Iizumi
  • SOUNDPROOF PANEL AND SOUNDPROOF STRUCTURE
    Publication number: 20110266088
    Abstract: A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.
    Type: Application
    Filed: January 13, 2010
    Publication date: November 3, 2011
    Applicant: KURARAY KURAFLEX CO., LTD.
    Inventors: Masaru Koike, Tomoaki Kimura, Masato Iizumi