Patents by Inventor Yoon-sang Ji

Yoon-sang Ji 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 Having Feedback Signal Reduction Function
    Publication number: 20080310659
    Abstract: The present invention relates to a hearing aid having feedback signal reduction function.
    Type: Application
    Filed: December 22, 2005
    Publication date: December 18, 2008
    Applicant: Industry-University Cooperation Foundation Hanyang University
    Inventors: Sun-ill Kim, In-young Kim, Sang-min Lee, Yoon-sang Ji, Se-young Jung