Patents by Inventor Kwok Kwong Cheung

Kwok Kwong 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).

  • Compact disc player
    Patent number: D413598
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: September 7, 1999
    Assignee: Ngai Luen (H.K.) Limited
    Inventor: Kwok Kwong Cheung
  • Compact disc player
    Patent number: D421989
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: March 28, 2000
    Assignee: Ngai Luen (H.K.) Limited
    Inventor: Kwok Kwong Cheung