Patents by Inventor Ka Wai Eric Cheung

Ka Wai Eric Cheung 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).

  • Converter circuit
    Patent number: 8228021
    Abstract: A converter circuit includes a phase circuit having a switch module, a first winding, a first diode, a second winding, and a second diode. The second winding is inductively coupled to the first winding. A multi-phase motor including the converter circuit, and a related method of controlling such a motor, are also provided.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: July 24, 2012
    Assignee: Automotive Parts and Accessory Systems R & D Centre Limited
    Inventors: Ka Wai Eric Cheung, Xiangdang Xue