Patents by Inventor Kwok Fu Cheng

Kwok Fu Cheng 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).

  • Pill reminder
    Patent number: D441951
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: May 15, 2001
    Assignee: Prod-Art Company Limited
    Inventor: Kwok Fu Cheng
  • Digital device for measuring distances on maps
    Patent number: D460701
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: July 23, 2002
    Assignee: Prod-Art Company Limited
    Inventor: Kwok Fu Cheng