Patents by Inventor Larry F. Crawford

Larry F. Crawford 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).

  • METHOD AND APPARATUS FOR POLISHING AN ALUMINUM-ZINC ALLOY HOT-DIP COATING AND THE PRODUCT THEREFROM
    Publication number: 20100136362
    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: Application
    Filed: January 29, 2010
    Publication date: June 3, 2010
    Applicant: Severstal Sparrows Point LLC
    Inventors: Henry N. Hahn, Ronald J. Dutton, Larry F. Crawford
  • 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
  • Method and apparatus for polishing an aluminum-zinc alloy hot-dip coating and the product therefrom
    Publication number: 20080107915
    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: Application
    Filed: November 3, 2006
    Publication date: May 8, 2008
    Inventors: Henry N. Hahn, Ronald J. Dutton, Larry F. Crawford