ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,652, issued on Nov. 3, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Changzhou, China).

"Manufacturing method for micro-electro-mechanical microphone" was invented by Yuwei Liu (Singapore) and Rui Zhang (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a manufacturing method for a micro-electro-mechanical microphone, including: providing a substrate, and forming a first baffle on the substrate; forming a diaphragm at a side of the first baffle, an orthographic projection of a periphery of the diaphragm towards the first baffle falling onto the first baffle; forming a second baffle at a side of the diagram at an interv...