Patents by Inventor Katsunobu Miyahra

Katsunobu Miyahra 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).

  • Hearing aid
    Patent number: 4447677
    Abstract: A hearing aid has a reproducing transducer and a microphone each having a diaphragm and a sound conduction opening and being closed hermetically except for said sound conduction opening. The reproducing transducer and the microphone are so mounted and accommodated in a housing that the vibration planes of the respective diaphragms are not parallel to each other, and the respective sound conduction openings may be directed towards the outside of the housing.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: May 8, 1984
    Assignee: Sony Corporation
    Inventors: Katsunobu Miyahra, Nobuyuki Matsumoto