ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,563, issued on July 28, was assigned to HYBRIT Development AB (Stockholm).

"Process for the production of carburized sponge iron" was invented by Jenny Anna Gunilla Hyllander (Sodra Sunderbyn, Sweden) and Magnus Tottie (Gallivare, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a process for the production of carburized sponge iron. The process comprises the steps of reducing iron ore pellets using a carbon-lean reducing gas in a direct reduction shaft reactor to provide a sponge iron intermediate; transferring the sponge iron intermediate to a carburization unit; and carburizing the sponge iron intermediate i...