US Patent Issued to DENSO TEN on Sept. 15 for "Power generation device" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,868, issued on Sept. 15, was assigned to DENSO TEN Ltd. (Kobe, Japan).

"Power generation device" was invented by Hiroyuki Watabe (Kobe, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power generation device includes a coil, a magnet, and a diaphragm. The magnet is provided at a position distant from the coil, having magnet pole faces facing a direction of the coil. The diaphragm vibrates upon receiving a sound wave, having either the coil or the magnet being placed. The diaphragm generates power by generating an electromotive force in the coil by a change in a magnetic field of the coil caused by changing a relative position of the coil and...