ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,821, issued on Feb. 17, was assigned to PixArt Imaging Inc. (Hsin-Chu, Taiwan).
"Smoke detection device and smoke collector" was invented by Cheng-Lin Yang (Hsin-Chu, Taiwan), Zhi-Hao Wu (Hsin-Chu, Taiwan), Yen-Chang Chu (Hsin-Chu, Taiwan), Hung-Yu Lai (Hsin-Chu, Taiwan) and Chih-Ming Sun (Hsin-Chu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A smoke detection device includes a circuit board, an illumination light source, an optical detector and a smoke collector. The illumination light source is disposed on the circuit board and adapted to emit an illumination beam. The optical detector is disposed adjacent to the illumination light sourc...