ALEXANDRIA, Va., May 19 -- United States Patent no. 12,634,611, issued on May 19, was assigned to Apple Inc. (Cupertino, Calif.).

"Piezoelectric MEMS valve for an electronic device" was invented by Guo-Lun Luo (Santa Clara, Calif.), Gokhan Hatipoglu (Milpitas, Calif.), Peter C. Hrudey (San Mateo, Calif.) and Scott C. Grinker (Belmont, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A micro-electromechanical systems (MEMS) package comprising: a MEMS package comprising a substate and a lid coupled to the substrate; a piezoelectric valve coupled to the substrate and comprising a number of movable members operable to be deformed in opposite directions upon application of a voltage to modify an acoustic res...