ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,826, issued on May 20, was assigned to DAS Environmental Expert GmbH (Dresden, Germany).

"Device and method for cleaning a gas stream" was invented by Chang-Guo Hsu (Hsinchu, Taiwan), Ting-Hao Lai (Toufen, Taiwan), Ching-Pin Chen (Hsinchu, Taiwan) and Ying-Liang Chen (Zhubei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device, such as a wet scrubber for cleaning a stream of gas by removing gaseous, liquid and solid impurities, has a gas inlet and a gas outlet. At the gas inlet there is a first structured packing. A spray-scrubber area with atomizing nozzles is provided above the first structured packing. A first demister is provided for ...