Patents by Inventor Hee-Young Ko

Hee-Young Ko 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).

  • Patent number: 5216571
    Abstract: An antistatic roll is provided for use in transferring and/or winding a continuous sheet of polymeric film. The roll comprises a cylindrical core made of an electrically conductive material which is provided with a pair of rotational shafts, each extending away from the opposite ends of the roll in an axial direction. A layer of dielectric material surrounds the core, which has a spiral groove formed on the outer circumference thereof at a substantially equal pitch. An elongate conductor is held within and extends along the spiral groove to gather static electricity from the roll and/or the polymeric film. Associated with the elongate conductor is a grounding arrangement to drain off the static electricity gathered therein.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: June 1, 1993
    Assignee: SKC Limited
    Inventor: Hee-Young Ko