US Patent Issued to SAFRAN on Dec. 9 for "Method for forming a layer of alumina at the surface of a metallic substrate" (Canadian, French Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,463, issued on Dec. 9, was assigned to SAFRAN (Paris).

"Method for forming a layer of alumina at the surface of a metallic substrate" was invented by Marjorie Christine Cavarroc (Moissy-Cramayel, France), Stephane Knittel (Moissy-Cramayel, France), Jolenta Sapieha (Montreal), Ludvik Martinu (Montreal), Florence Bergeron (Montreal) and Simon Loquai (Montreal).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for forming a layer of alumina on the surface of a metal alloy substrate including aluminium, includes depositing a first aluminium layer on a surface of the metallic substrate, depositing a second layer by vapour-phase deposition on the firs...