US Patent Issued to MITSUMI ELECTRIC on Nov. 25 for "Vibration device, speaker unit, and method for manufacturing vibration device" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,716, issued on Nov. 25, was assigned to MITSUMI ELECTRIC Co. LTD. (Tokyo).

"Vibration device, speaker unit, and method for manufacturing vibration device" was invented by Hisanori Aga (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vibration device includes a substrate, a first drive source, a second drive source, and a membrane. The membrane includes a main portion extending in an in-plane direction, and a damper protruding in a direction perpendicular to a plane of the membrane. The main portion includes a first region disposed on the first drive source, a second region disposed on the second drive source, and a third region disposed betwe...