Patents by Inventor Lai-ying Yim

Lai-ying Yim 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).

  • Keyboard
    Patent number: D582414
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: December 9, 2008
    Assignee: Lexibook Limited
    Inventor: Lai-ying Yim
  • Electronic game apparatus
    Patent number: D422644
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: April 11, 2000
    Assignee: Welback Enterprises Ltd.
    Inventor: Lai-Ying Yim