Patents by Inventor Cheng Lai-Ying

Cheng Lai-Ying 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: D439585
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: March 27, 2001
    Assignee: Powerphone Network Limited
    Inventors: Harry Law, Cheng Lai-Ying
  • Patent number: D424049
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: May 2, 2000
    Assignee: Imagic Infomedia Technology Ltd.
    Inventors: David Ho, James Chong, Cheng Lai-Ying