ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,529, issued on Oct. 14, was assigned to Sumitomo SHI FW Energia Oy (Espoo, Finland).

"Circulating fluidized bed boiler" was invented by Slawomir Sluszniak (Gliwice, Poland), Roger Glowicki (Oswitecim, Poland), Krzysztof Wyka (Nieborowice, Poland), Slawomir Solipiwko (Czekanka, Poland) and Bartlomiej Ferdyn (Piekary Slaskie, Poland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A circulating fluidized bed boiler includes a vertically extending furnace, a separator unit, and an exhaust gas channel connected to the separator unit via a cross over duct. The exhaust gas channel includes a first vertically extending pass, a horizontally extending pass, an...