Patents by Inventor Chi Kay Yung

Chi Kay Yung 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).

  • Roller skate
    Patent number: D410268
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: May 25, 1999
    Assignee: Grace A.J. Manufacturing Co. Ltd.
    Inventor: Chi Kay Yung