Patents by Inventor Shi-min Qu

Shi-min Qu 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).

  • EARPIECE HAVING MULTIPLE AUDIO CHAMBERS
    Publication number: 20130016867
    Abstract: An earpiece is disclosed. The earpiece includes a housing forming a volume, a number of sound holes arranged in the front end and rear end of the housing, a sound generator accommodated in the chamber for dividing the volume into several parts isolated with each other, and a wire electrically connected to the sound generator for providing audio signals to the sound generator. Each of several parts of the volume communicates with the outside of the earpiece via a corresponding sound hole in the housing.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 17, 2013
    Applicants: AAC TECHNOLOGIES HOLDINGS INC., AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Li-shu Xi, Shi-min Qu, Xing-zhi Huang