US Patent Issued to ArcelorMittal on July 21 for "Press hardening method" (French, Belgian Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,926, issued on July 21, was assigned to ArcelorMittal (Luxembourg).

"Press hardening method" was invented by Raisa Grigorieva (Metz, France), Florin Duminica (Tilff, Belgium), Brahim Nabi (Leuven, Belgium), Pascal Drillet (Rozerieulles, France) and Thierry Sturel (Le Ban Saint Martin, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A press hardening method including: A. providing a steel sheet for heat treatment, being optionally precoated with an aluminum-based pre-coating, B. deposition of a hydrogen barrier pre-coating comprising chromium and not comprising nickel over a thickness from 10 to 550 nm, C. cutting the precoated steel sheet to o...