Patents by Inventor Hitoshi NAKATSUKASA

Hitoshi NAKATSUKASA 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).

  • Patent number: 11713874
    Abstract: A light emission display device according to an aspect of the present invention includes: a light guide member that converts rays of incident light from a back face thereof to produce diffused light and emits the diffused light from the front face; a plurality of point light sources that are arranged at intervals on a side of the back face of the light guide member, in which the light guide member includes a light shield structure that partitions the front face into a plurality of light emission regions each corresponding to at least one point light source of the plurality of point light sources immediately below the front face, such that transmission of the rays of light to an adjacent light emission region is reduced.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: August 1, 2023
    Assignee: YAMAHA CORPORATION
    Inventor: Hitoshi Nakatsukasa
  • Publication number: 20210148561
    Abstract: A light emission display device according to an aspect of the present invention includes: a light guide member that converts rays of incident light from a back face thereof to produce diffused light and emits the diffused light from the front face; a plurality of point light sources that are arranged at intervals on a side of the back face of the light guide member, in which the light guide member includes a light shield structure that partitions the front face into a plurality of light emission regions each corresponding to at least one point light source of the plurality of point light sources immediately below the front face, such that transmission of the rays of light to an adjacent light emission region is reduced.
    Type: Application
    Filed: January 28, 2021
    Publication date: May 20, 2021
    Inventor: Hitoshi NAKATSUKASA
  • Patent number: 11006194
    Abstract: A grille and an acoustic device having a superior exterior design without impairment of acoustic efficiency are provided. The grille includes: a through hole-provided region having a plurality of through holes; and a non-through hole-provided region having a plurality of non-through holes each with a bottom, and provided adjacent to the through hole-provided region. The through holes and the non-through holes entirely provide a plurality of openings on an exterior surface of the grille. In the non-through hole-provided region, a depth of the non-through holes on a side close to the through hole-provided region is greater than a depth of the non-through holes on a side distant from the through hole-provided region.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: May 11, 2021
    Assignee: YAMAHA CORPORATION
    Inventor: Hitoshi Nakatsukasa
  • Patent number: 10941934
    Abstract: A light emission display device according to an aspect of the present invention includes: a light guide member that converts rays of incident light from a back face thereof to produce diffused light and emits the diffused light from the front face; a plurality of point light sources that are arranged at intervals on a side of the back face of the light guide member, in which the light guide member includes a light shield structure that partitions the front face into a plurality of light emission regions each corresponding to at least one point light source of the plurality of point light sources immediately below the front face, such that transmission of the rays of light to an adjacent light emission region is reduced.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: March 9, 2021
    Assignee: YAMAHA CORPORATION
    Inventor: Hitoshi Nakatsukasa
  • Publication number: 20200336811
    Abstract: A grille and an acoustic device having a superior exterior design without impairment of acoustic efficiency are provided. The grille includes: a through hole-provided region having a plurality of through holes; and a non-through hole-provided region having a plurality of non-through holes each with a bottom, and provided adjacent to the through hole-provided region. The through holes and the non-through holes entirely provide a plurality of openings on an exterior surface of the grille. In the non-through hole-provided region, a depth of the non-through holes on a side close to the through hole-provided region is greater than a depth of the non-through holes on a side distant from the through hole-provided region.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Inventor: Hitoshi NAKATSUKASA
  • Patent number: 10743093
    Abstract: A grille and an acoustic device having a superior exterior design without impairment of acoustic efficiency are provided. The grille includes: a through hole-provided region having a plurality of through holes; and a non-through hole-provided region having a plurality of non-through holes each with a bottom, and provided adjacent to the through hole-provided region. The through holes and the non-through holes entirely provide a plurality of openings on an exterior surface of the grille. In the non-through hole-provided region, a depth of the non-through holes on a side close to the through hole-provided region is greater than a depth of the non-through holes on a side distant from the through hole-provided region.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 11, 2020
    Assignee: YAMAHA CORPORATION
    Inventor: Hitoshi Nakatsukasa
  • Publication number: 20190293279
    Abstract: A light emission display device according to an aspect of the present invention includes: a light guide member that converts rays of incident light from a back face thereof to produce diffused light and emits the diffused light from the front face; a plurality of point light sources that are arranged at intervals on a side of the back face of the light guide member, in which the light guide member includes a light shield structure that partitions the front face into a plurality of light emission regions each corresponding to at least one point light source of the plurality of point light sources immediately below the front face, such that transmission of the rays of light to an adjacent light emission region is reduced.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 26, 2019
    Inventor: Hitoshi NAKATSUKASA
  • Patent number: 10284937
    Abstract: A sound output and pickup device is provided with a speaker system, a microphone, and a housing. The housing includes inside the speaker system, the microphone, and a wall that divides a space in which the speaker system is stored and a space in which the microphone is stored. The wall has a through hole. The distance from the through hole to the outside of the housing is shorter than the distance from the through hole to the microphone.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: May 7, 2019
    Assignee: YAMAHA CORPORATION
    Inventor: Hitoshi Nakatsukasa
  • Publication number: 20180176670
    Abstract: A grille and an acoustic device having a superior exterior design without impairment of acoustic efficiency are provided. The grille includes: a through hole-provided region having a plurality of through holes; and a non-through hole-provided region having a plurality of non-through holes each with a bottom, and provided adjacent to the through hole-provided region. The through holes and the non-through holes entirely provide a plurality of openings on an exterior surface of the grille. In the non-through hole-provided region, a depth of the non-through holes on a side close to the through hole-provided region is greater than a depth of the non-through holes on a side distant from the through hole-provided region.
    Type: Application
    Filed: February 21, 2018
    Publication date: June 21, 2018
    Inventor: Hitoshi NAKATSUKASA
  • Publication number: 20170303025
    Abstract: A sound output and pickup device is provided with a speaker system, a microphone, and a housing. The housing includes inside the speaker system, the microphone, and a wall that divides a space in which the speaker system is stored and a space in which the microphone is stored. The wall has a through hole. The distance from the through hole to the outside of the housing is shorter than the distance from the through hole to the microphone.
    Type: Application
    Filed: June 28, 2017
    Publication date: October 19, 2017
    Inventor: Hitoshi NAKATSUKASA