ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,854, issued on Nov. 4, was assigned to Schott AG (Mainz, Germany).

"Glass or glass ceramic as well as method for melting and refining glass or glass ceramic" was invented by Olaf ClauBen (Undenheim, Germany), Steffen Grun (Wallhausen, Germany), Thomas Lifka (Mainz-Bretzenheim, Germany) and Andre Schrepfer (Frankfurt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for melting and/or refining glass, glass ceramic or glass which can be ceramized to form glass ceramic includes: providing a batch of raw materials; heating the batch until a melt of molten glass is obtained, the batch being heated at least in sections to a temperature above...