Patents Assigned to Severstal Sparrows Point, LLC
  • Method for polishing and aluminum-zinc hot-dip coating
    Patent number: 7699686
    Abstract: The present invention is directed to a method of polishing a minimum spangle aluminum-zinc alloy hot-dip coating applied to sheet steel to provide a polished hot-dip coating having a continuous, consistent surface appearance suitable for use in an unpainted condition.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: April 20, 2010
    Assignee: Severstal Sparrows Point, LLC
    Inventors: Henry N. Hahn, Ronald J. Dutton, Larry F. Crawford