Patents by Inventor Hidefumi YAMAUCHI

Hidefumi YAMAUCHI 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).

  • Acoustic material and musical instrument
    Patent number: 10195828
    Abstract: An acoustic material is provided which includes a plurality of wood veneers laminated via an adhesive, in which the veneer is impregnated with the adhesive, and the adjacent veneers are substantially in contact with one another. The adjacent veneers are impregnated with the adhesive in an amount of preferably no less than 1 g/m2 and no greater than 50 g/m2 per unit area in and around a boundary region of the adjacent veneers. The adhesive may be a water-soluble adhesive or a water-based emulsion adhesive. The veneer may be a rotary veneer, a sawn veneer or a sliced veneer. A musical instrument is further provided which includes a sound board, in which the acoustic material is used as the sound board.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: February 5, 2019
    Assignees: Yamaha Corporation, Akita Prefectural University
    Inventors: Toshihisa Yamazaki, Eri Hirai, Hidefumi Yamauchi
  • Acoustic material and musical instrument
    Patent number: 10137670
    Abstract: An acoustic material is provided which includes a plurality of wood veneers laminated via an adhesive, in which the veneer is impregnated with the adhesive, and the adjacent veneers are substantially in contact with one another. The adjacent veneers are impregnated with the adhesive in an amount of preferably no less than 1 g/m2 and no greater than 50 g/m2 per unit area in and around a boundary region of the adjacent veneers. The adhesive may be a water-soluble adhesive or a water-based emulsion adhesive. The veneer may be a rotary veneer, a sawn veneer or a sliced veneer. A musical instrument is further provided which includes a sound board, in which the acoustic material is used as the sound board.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: November 27, 2018
    Assignees: Yamaha Corporation, Akita Prefectural University
    Inventors: Toshihisa Yamazaki, Eri Hirai, Hidefumi Yamauchi
  • Acoustic Material and Musical Instrument
    Publication number: 20170197388
    Abstract: An acoustic material is provided which includes a plurality of wood veneers laminated via an adhesive, in which the veneer is impregnated with the adhesive, and the adjacent veneers are substantially in contact with one another. The adjacent veneers are impregnated with the adhesive in an amount of preferably no less than 1 g/m2 and no greater than 50 g/m2 per unit area in and around a boundary region of the adjacent veneers. The adhesive may be a water-soluble adhesive or a water-based emulsion adhesive. The veneer may be a rotary veneer, a sawn veneer or a sliced veneer. A musical instrument is further provided which includes a sound board, in which the acoustic material is used as the sound board.
    Type: Application
    Filed: January 6, 2017
    Publication date: July 13, 2017
    Inventors: Toshihisa YAMAZAKI, Eri HIRAI, Hidefumi YAMAUCHI