Patents by Inventor MASATOSHI TANIZAWA

MASATOSHI TANIZAWA 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).

  • Speaker device
    Patent number: 11750959
    Abstract: A speaker device is used while being attached to a helmet, and includes a speaker unit that outputs a sound, a speaker housing that includes a back wall portion covering the speaker unit from a back side, and in which a space between a back surface of the speaker unit and the back wall portion is formed as an output space for the sound output from the back surface of the speaker unit, and a duct whose internal space is communicated with the output space and that guides, to an outside of the helmet, the sound output to the output space, in which a distance between the back surface of the speaker unit and the back wall portion is smaller than a distance of the internal space of the duct in a direction in which the duct guides the sound.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: September 5, 2023
    Assignee: SONY GROUP CORPORATION
    Inventors: Koji Nagata, Masatoshi Tanizawa
  • SPEAKER DEVICE
    Publication number: 20220021957
    Abstract: A speaker device is used while being attached to a helmet, and includes a speaker unit that outputs a sound, a speaker housing that includes a back wall portion covering the speaker unit from a back side, and in which a space between a back surface of the speaker unit and the back wall portion is formed as an output space for the sound output from the back surface of the speaker unit, and a duct whose internal space is communicated with the output space and that guides, to an outside of the helmet, the sound output to the output space, in which a distance between the back surface of the speaker unit and the back wall portion is smaller than a distance of the internal space of the duct in a direction in which the duct guides the sound.
    Type: Application
    Filed: November 6, 2019
    Publication date: January 20, 2022
    Inventors: KOJI NAGATA, MASATOSHI TANIZAWA