ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,515, issued on Oct. 6, was assigned to Arconic Technologies LLC (Pittsburgh).
"Continuous coil pretreatment process" was invented by Michael Bull (Brighton, Mich.) and Theresa Elizabeth MacFarlane (Woodstock, Ga.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a continuous coil pretreatment process used to treat the surface of an aluminum alloy sheet or coil for subsequent deposition of an acidic organophosphorus compound. The process can include applying a cleaner to a surface of an aluminum sheet or a coil; etching the surface of the aluminum sheet or the coil with an acidic solution; rinsing the surface of the aluminum sheet or ...