ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,851, issued on March 24, was assigned to AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co. LTD. (Shenzhen, China).

"Gas sensor" was invented by Jinyu Zhang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a gas sensor including a shell with a receiving cavity, an acoustic sensor, a partition plate and a flexible film accommodated in the receiving cavity. The partition plate and the flexible film jointly divide the receiving cavity into a first cavity and a second cavity, the first cavity is a sealed cavity formed by the joint enclosure of the flexible film, the partition plate, the side wall and the substrate. ...