Patents by Inventor Chun Yeung Keung

Chun Yeung Keung 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).

  • Toy system
    Patent number: 6431937
    Abstract: A toy is disclosed as including a baton-like signal transmitter (10) and a doll (44) which includes an infrared signal receiver (46) for receiving infrared signals from the signal transmitter (10), in which the doll (44) produces sound, e.g. songs, in response to signals received from the signal transmitter (10), and the signals are transmitted by the signal transmitter (10) upon movement of the signal transmitter (10).
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: August 13, 2002
    Assignee: Infinite Dream Machine Limited
    Inventors: Jack Lau, Chi Wah Lo, Chun Yeung Keung