ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,755, issued on Dec. 30, was assigned to APERAM (Luxembourg).
"Austenitic stainless-steel, plates for heat exchangers, and chimney ducts made with this steel" was invented by Audrey Allion (Lomme, France), Jessica Delacroix (Bethune, France) and Bertrand Petit (Auchel, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "Austenitic stainless-steel made of steel having a composition in weight percentages, consisting of: tracesless than equal toCless than equal to0.03%; 1.0%less than equal toMnless than equal to2.0%; 0.8%less than equal toSiless than equal to2.0% %; preferentially 1.0%less than equal toSiless than equal to1.5%; tracesless than equal t...