Patents by Inventor Muneyuki Shiina

Muneyuki Shiina 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).

  • Sound absorbing material
    Patent number: 11705098
    Abstract: The sound absorbing material according to the present invention is formed by laminating a porous sound absorber and two or more sheets of a nonwoven fabric one on another. The nonwoven fabric has a plurality of drawn filaments arranged and oriented in one direction. The mode value of the diameter distribution of the plurality of filaments is in the range of 1 to 4 ?m. The grammage of the nonwoven fabric is in the range of 5 to 40 g/m2. The sound absorbing material according to the present invention provides high sound absorption performance in a predetermined low frequency band of 6000 Hz or less, and still remains light in weight and flexible enough and easy enough to handle to be substantially comparable to the porous sound absorber.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: July 18, 2023
    Inventors: Kunihiko Ibayashi, Hiroaki Konishi, Muneyuki Shiina, Masahiro Wakayama
  • Sound Absorbing Material
    Publication number: 20200135159
    Abstract: The sound absorbing material according to the present invention is formed by laminating a porous sound absorber and two or more sheets of a nonwoven fabric one on another. The nonwoven fabric has a plurality of drawn filaments arranged and oriented in one direction. The mode value of the diameter distribution of the plurality of filaments is in the range of 1 to 4 ?m. The grammage of the nonwoven fabric is in the range of 5 to 40 g/m2. The sound absorbing material according to the present invention provides high sound absorption performance in a predetermined low frequency band of 6000 Hz or less, and still remains light in weight and flexible enough and easy enough to handle to be substantially comparable to the porous sound absorber.
    Type: Application
    Filed: June 15, 2018
    Publication date: April 30, 2020
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Kunihiko Ibayashi, Hiroaki Konishi, Muneyuki Shiina, Masahiro Wakayama
  • Nonwoven Sound Absorbing Material
    Publication number: 20200058282
    Abstract: A nonwoven sound absorbing material according to the present invention includes a nonwoven laminate formed of a stack of a plurality of sheets of a filament nonwoven fabric having a plurality of drawn filaments arranged and oriented in one direction, and the mode value of the diameter distribution of the plurality of drawn filaments is 1 to 4 ?m. The nonwoven sound absorbing material according to the present invention has improved sound absorption performance in a relatively low frequency band as compared to a conventional one.
    Type: Application
    Filed: November 28, 2017
    Publication date: February 20, 2020
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Kunihiko Ibayashi, Tomoo Hirai, Hiroaki Konishi, Muneyuki Shiina, Ken Endo, Masahiro Wakayama
  • Nonwoven Fabric For Sound Absorbing Application And Sound Absorbing Material Using The Same
    Publication number: 20190279609
    Abstract: A nonwoven fabric for sound absorbing application according to the present invention includes a plurality of drawn filaments arranged and oriented in one direction, and the mode value of the diameter distribution of the plurality of drawn filaments is 1 to 4 ?m. When laminated on a porous sound absorbing material, the nonwoven fabric for sound absorbing application according to the present invention constitutes a sound absorbing material with the porous sound absorbing material, and the resultant laminated sound absorbing material has improved sound absorption performance in the frequency band of 1000 to 10000 Hz as compared to the porous sound absorbing material alone.
    Type: Application
    Filed: November 28, 2017
    Publication date: September 12, 2019
    Applicant: JXTG Nippon Oil & Energy Corporation
    Inventors: Kunihiko Ibayashi, Tomoo Hirai, Hiroaki Konishi, Muneyuki Shiina, Ken Endo, Masahiro Wakayama