ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,172, issued on June 2, was assigned to Bluescope Steel Ltd. (Melbourne, Australia).

"Corrosion protection with Al/Zn-based coatings" was invented by Ross McDowall Smith (Cordeaux Heights, Australia), Qiyang Liu (Mount Keira, Australia), Bryan Andrew Shedden (Albion Park, Australia), Aaron Kiffer Neufeld (Figtree, Australia), Joe Williams (Woonona, Australia), David James Nolan (Gerringong, Australia) and Wayne Renshaw (Unanderra, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Red rust staining of Al/Zn coated steel strip in "acid rain" or "polluted" environments can be minimised by forming the coating as an Al-Zn-Si-Mg alloy coating with an...