Patents by Inventor Wayne Renshaw

Wayne Renshaw 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 of controlling surface defects in metal-coated strip
    Publication number: 20060177687
    Abstract: A method of controlling “rough coating” and “pinhole-uncoated” surface defects on a steel strip coated with a aluminum-zinc-silicon alloy. The alloy has 50-60 % wt Al, 37-46 % wt Zn and 1.2-2.3 % wt Si. The method includes heat treating the steel strip in a heat treatment furnace and thereafter hot-dip coating the strip in a molten bath and thereby forming a coating of the alloy on the steel strip. The method is characterized by controlling the concentration of (i) strontium or (ii) calcium or (iii) strontium and calcium in the molten bath to be at least 2 ppm.
    Type: Application
    Filed: September 20, 2005
    Publication date: August 10, 2006
    Applicant: BlueScope Steel Limited
    Inventors: Wayne Renshaw, Qiyang Liu