Patents by Inventor James D. Cheung

James D. 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).

  • Patent number: 7494237
    Abstract: The present invention generally relates to a shoe having an incorporated light source. The light source includes a plurality of LEDs composed of several light-emitting chips of at least two different colors wherein the plurality of LEDs being used to generate light of various color. The light source further includes a trigger controller for generating a trigger signal when vibrated and a control IC for generating a drive signal to control a lighting duration of each of the plurality of LEDs to emit a plurality of desired different illumination sequences of at least 2 different colors. The drive signal is activated by the trigger signal and the manual switch selects the plurality of desired programmed different sequential illumination of light sources from at least two programmed flash sequences.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: February 24, 2009
    Inventor: James D. Cheung