ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,440,708, issued on Oct. 14, was assigned to MICROJET TECHNOLOGY Co. LTD. (Hsinchu, Taiwan).

"Nasal-plug filter device" was invented by Hao-Jan Mou (Hsinchu, Taiwan), Hsien-Chung Tai (Hsinchu, Taiwan), Chi-Feng Huang (Hsinchu, Taiwan), Yung-Lung Han (Hsinchu, Taiwan), Chang-Yen Tsai (Hsinchu, Taiwan), Wei-Ming Lee (Hsinchu, Taiwan) and Yang Ku (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A nasal-plug filter device including a device body, a filter, a first actuator, a second actuator, and a gas sensor is provided. The device body has a ventilating channel, and the ventilating channel has an inlet end and an outlet end. The filter is di...