Patents by Inventor Heung-Sub Yoon

Heung-Sub Yoon 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).

  • Golf club having two angularly divergent impact faces
    Patent number: 7850538
    Abstract: A dual purpose putting and chipping golf club has a golf club head with a golf ball impact face vertically split into a pair of angularly divergent impact surfaces; a vertical putting surface and an obtusely angled chipping surface which face in the same horizontal direction.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: December 14, 2010
    Inventor: Heung-Sub Yoon