Patents by Inventor Ryan C. Tsui

Ryan C. Tsui 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).

  • Multi-driver air-tube earphone
    Patent number: 9860645
    Abstract: An earphone assembly with a manifold at the earpiece having a first driver directly coupled and second driver coupled through a tube, both driven by a common signal source such, which results in a propagation time differential in the arrival of first emitted signals and second emitted signals from the drivers, respectively, at the earpiece.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 2, 2018
    Inventor: Ryan C. Tsui