ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,140, issued on March 17, was assigned to Rock Fiber Inc. (Houston).
"Vertical melting furnace for igneous rock fiber manufacturing" was invented by Oleksandr Biland (The Woodlands, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to a vertical volcanic rock melting furnace having a reduced spatial footprint relative to prior art furnaces. The melting furnace includes a top melting section, which raises the temperature of a charge above the liquidus temperature, a middle cooling section configured to reduce the temperature of the melt, and a bottom conditioning section configured to maintain the melt above a cry...