ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,900, issued on Sept. 9, was assigned to xMEMS Labs Inc. (Santa Clara, Calif.).
"Air-pulse generating device with resonant chamber embedded therein" was invented by Jye Ren (Taipei, Taiwan), Eldwin Jiaqiang Ng (Sunnyvale, Calif.) and Jemm Yue Liang (Sunnyvale, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The air-pulse generating device comprises a film structure, operating at an ultrasonic operating frequency, and a resonant chamber, formed on a side of the film structure. A resonance is formed within the resonance chamber. Due to the resonant chamber, the APG device has a peak on a frequency response of an acoustic property of the APG devi...