ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,734, issued on May 27.

"Dryer for drying dry materials, especially textiles" was invented by Tadeusz Max Wiecek (Cologne, Germany), Elzbieta Wiecek (Cologne, Germany) and Natalie Gesch (Pulheim, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dryer for drying dry materials having heating and cooling chambers, wherein the two chambers are sealed gas-tight to each other and/or to the outside environment, a connecting line that fluidically connects the chambers to each other and has a closing valve, a vacuum pump that is actively connected to the cooling chamber, a heat pump that is actively connected to the two chambers, and a steam generator...