ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,881, issued on Aug. 26, was assigned to PRO-IRODA INDUSTRIES INC. (Taichung, Taiwan).

"Combustion device with high combustion efficiency" was invented by Wei-Long Chen (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "extends lengthwise along a reference line. The mixing section includes a second air inlet extending therethrough in a direction transverse to the reference line. The mixing section has a first side and a second side on opposite sides and the second side is adjacent to a Y-axis of a coordinate system. The first mixing port extends on the second side. The outlet section has a straight part and a curved part along its lengt...