Patents by Inventor Kwok Piu Yeung

Kwok Piu Yeung 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).

  • Footwear with speed threshold indicative luminous signal generator and circuitry therefor
    Patent number: 6776498
    Abstract: Footwear or foot-driven articles with speed threshold indicative luminous signal generator in which luminous signals are emitted when the motion speed of the footwear or the foot-driven article has reached a pre-determined threshold. The luminous signals above the threshold can be varied according to the speed above that threshold in a pre-determined manner.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: August 17, 2004
    Inventor: Kwok Piu Yeung
  • Footwear with speed threshold indicative luminous signal generator and circuitry therefor
    Publication number: 20030223223
    Abstract: Footwear or foot-driven articles with speed threshold indicative luminous signal generator in which luminous signals are emitted when the motion speed of the footwear or the foot-driven article has reached a pre-determined threshold. The luminous signals above the threshold can be varied according to the speed above that threshold in a pre-determined manner.
    Type: Application
    Filed: May 30, 2002
    Publication date: December 4, 2003
    Inventor: Kwok Piu Yeung