ALEXANDRIA, Va., March 3 -- United States Patent no. 12,568,336, issued on March 3, was assigned to AAC Microtech (Changzhou) Co. Ltd. (Jiangsu, China).
"Loudspeaker" was invented by Li Ren (Changzhou, China) and Shengjie Hua (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a loudspeaker including a frame, a first diaphragm, a first voice coil and a magnetic circuit system, and a first circuit board arranged between the first diaphragm and the first voice coil. The magnetic circuit system includes a magnetic yoke and a first magnet. Compared with the related technology, the loudspeaker of the present disclosure guarantees the concentricity of the frame and the ...