Patents by Inventor Hideaki Kanda

Hideaki Kanda 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 system
    Patent number: 4146111
    Abstract: A speaker system comprising a speaker cabinet having a forward baffle plate, two side plates and a rear plate, a passive diaphragm, a speaker mounted in the baffle plate of the speaker cabinet, an opening disposed in the baffle plate next to the speaker as an outlet for the sound radiated from the passive diaphragm, a dividing plate slantedly disposed between the baffle plate and the rear plate of the speaker cabinet, the dividing plate dividing the speaker cabinet into a first part including the speaker and a second part including the opening, the passive diaphragm being mounted in the dividing plate.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: March 27, 1979
    Assignee: Trio Kabushiki Kaisha
    Inventors: Yutaka Mae, Shiro Iwakura, Sigeyuki Koga, Hideki Ogawa, Hideaki Kanda