Patents by Inventor Yi-Kung Hung

Yi-Kung Hung 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).

  • Hammer
    Patent number: D452126
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: December 18, 2001
    Inventor: Yi-Kung Hung
  • Handy hoe with fork
    Patent number: D457792
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: May 28, 2002
    Inventor: Yi-Kung Hung