Patents by Inventor Tokio Masui

Tokio Masui 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: 4027113
    Abstract: A headphone comprising: two ear cups; a head band; and coupling means for rotatably coupling the ear cups to the head band, the ear cups having ear pads on those sides facing each other, respectively, the head band being positioned on that side of each of the ear cups away from the side where the ear pad is provided, said coupling means rotatably coupling the head band to that side of each of the ear cups located away from the side where the ear pad is provided, whereby the coupling means enables each of the ear cups to make vertical and horizontal rotations relative to the ear of the user. This headphone insures free rotation of the ear cups in universal directions, and the rotation angle can be controlled as required. Moreover, the headphone as a whole can be provided in a compact size.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: May 31, 1977
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Toyosaku Matsumoto, Tokio Masui, Takao Nakaya