ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,332, issued on Dec. 9, was assigned to ENCHANT TEK. Co. LTD. (Dongshan Township, Taiwan).
"Oscillating positive expiratory pressure device" was invented by Chun-Hung Chen (Dongshan Township, Yilan County, Taiwan), Ling-Ling Leonard Lin (Dongshan Township, Yilan County, Taiwan) and Min-Hsien Huang (Dongshan Township, Yilan County, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oscillating positive expiratory pressure device includes a housing, a top cover, and an oscillating unit. The housing includes a bottom wall and a surrounding wall. The bottom wall has an inclined enclosing surface extending downwardly and terminating at an opening. Th...