Patents by Inventor Akihiko Kashiwabara

Akihiko Kashiwabara 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).

  • Coaxial type composite loudspeaker
    Patent number: 4552242
    Abstract: A coaxial type composite loudspeaker has at least three coaxially arranged loudspeakers of different opening diameters and different allocated frequency bands. This composite loudspeaker can reduce the synergistic interference among the component loudspeakers to prevent deterioration of the characteristics of the respective component loudspeakers and also can centralize the sound sources of the component loudspeakers upon a single axis to enhance the localization of sound image and improve the directivity on the horizontal plane.
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: November 12, 1985
    Assignee: Soshin Onkyo Works, Ltd.
    Inventor: Akihiko Kashiwabara