Patents by Inventor Chang Sub Yoo

Chang Sub Yoo 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).

  • Pipe lighter
    Patent number: D403806
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 5, 1999
    Assignee: Colibri Corporation
    Inventor: Chang Sub Yoo