Patents by Inventor Kwangwu Chang

Kwangwu Chang 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).

  • Patent number: 8351640
    Abstract: A multi-directional sound emission means and a system having same are disclosed. The system comprises a speaker body and sound emission devices coupled to both ends of the speaker body. The sound emission devices each include a sound emission means for directionally emitting sound towards multiple directions. The sound emission means includes a base, a loudspeaker disposed on the base, and a plurality of hollow mechanical sound conducting elements. The loudspeaker has an opening where the sound is emitted. Each hollow mechanical sound conducting element has an inner opening end and an exterior opening end opposite to the inner opening end. The exterior opening ends are directed towards desired multiple directions, respectively. The inner opening ends are in sound communication with the opening of the loudspeaker such that sound from the loudspeaker is emitted along the desired multiple directions through the sound conducting elements.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: January 8, 2013
    Assignee: IAG Group Ltd.
    Inventor: Kwangwu Chang
  • Patent number: 8351639
    Abstract: A multi-directional sound emission system comprises a speaker body and sound emission devices coupled to both ends of the speaker body. The sound emission devices each include a sound emission means for directionally emitting sound towards multiple directions. The sound emission means includes a plurality of hollow mechanical sound conducting elements. Each hollow mechanical sound conducting element has an inner opening end and an exterior opening end opposite to the inner opening end. The exterior opening ends of the sound conducting elements are directed towards desired multiple directions, respectively. The sound emission means is configured for receiving sound signals from the speaker body and emitting sound along the desired multiple directions through the sound conducting elements.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: January 8, 2013
    Assignee: IAG Group Ltd.
    Inventor: Kwangwu Chang
  • Publication number: 20110019853
    Abstract: A multi-directional sound emission means and a system having same are disclosed. The system comprises a speaker body and sound emission devices coupled to both ends of the speaker body. The sound emission devices each include a sound emission means for directionally emitting sound towards multiple directions. The sound emission means includes a base, a loudspeaker disposed on the base, and a plurality of hollow mechanical sound conducting elements. The loudspeaker has an opening where the sound is emitted. Each hollow mechanical sound conducting element has an inner opening end and an exterior opening end opposite to the inner opening end. The exterior opening ends are directed towards desired multiple directions, respectively. The inner opening ends are in sound communication with the opening of the loudspeaker such that sound from the loudspeaker is emitted along the desired multiple directions through the sound conducting elements.
    Type: Application
    Filed: February 26, 2010
    Publication date: January 27, 2011
    Applicant: IAG GROUP LTD.
    Inventor: Kwangwu Chang
  • Publication number: 20110019844
    Abstract: A multi-directional sound emission system comprises a speaker body and sound emission devices coupled to both ends of the speaker body. The sound emission devices each include a sound emission means for directionally emitting sound towards multiple directions. The sound emission means includes a plurality of hollow mechanical sound conducting elements. Each hollow mechanical sound conducting element has an inner opening end and an exterior opening end opposite to the inner opening end. The exterior opening ends of the sound conducting elements are directed towards desired multiple directions, respectively. The sound emission means is configured for receiving sound signals from the speaker body and emitting sound along the desired multiple directions through the sound conducting elements.
    Type: Application
    Filed: February 3, 2010
    Publication date: January 27, 2011
    Applicant: IAG GROUP LTD.
    Inventor: Kwangwu Chang