Patents by Inventor Keijirou Hanada

Keijirou Hanada 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).

  • Vehicle presence notification apparatus
    Patent number: 8933794
    Abstract: A vehicle presence notification apparatus notifying a presence of a vehicle includes an alarm device and a dynamic speaker. The alarm device includes an alarm generator generating an alarm sound and an acoustic tube through which the alarm sound is emitted outside of the vehicle. The dynamic speaker generates a notification sound with audible frequency. The dynamic speaker is fixed to the acoustic tube and emits the notification sound inside of the acoustic tube, such that the notification sound is generated outside of the vehicle through the acoustic tube.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: January 13, 2015
    Assignees: Denso Corporation, Hamanakodenso Co., Ltd.
    Inventors: Toshiaki Nakayama, Koji Suzuki, Keijirou Hanada