Patents by Inventor Tohru Nagatani

Tohru Nagatani 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).

  • Acoustic device
    Patent number: 6792122
    Abstract: An audio device has an electroacoustic transducer mounted on a clamp for converting an electric signal into an acoustic signal, an electromechanical vibration transducer for converting the electric signal into a mechanical vibration, and an abutting member having the electromechanical vibration transducer therein and mounted on the clamp so that the electromechanical vibration transducer is contacted with a cervix of a user when the audio device is worn on the head of the user.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: September 14, 2004
    Assignee: Pioneer Corporation
    Inventors: Haruo Okada, Shunichi Takahashi, Takashi Ohyaba, Tohru Nagatani, Katsutoki Hanayama