ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,341, issued on April 14, was assigned to SONY GROUP Corp. (Tokyo).

"Diaphragm pump adjustment portion for adjusting resonant frequency of diaphragm" was invented by Takuma Matsushita (Tokyo), Hiroshi Suzuki (Tokyo) and Hiroto Kawaguchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "[Object] To provide a technology or the like capable of improving driving efficiency of a diaphragm pump.[Solving Means] A diaphragm pump (10) according to the present technology includes a first diaphragm (1a), a second diaphragm (1b), and an adjustment portion (11). The first diaphragm (1a) includes a first member including a first elastic portion (5a), and a fi...