US Patent Issued to FOSTER ELECTRIC on April 15 for "Vibration plate and method for manufacturing vibration plate" (Japanese Inventors)

ALEXANDRIA, Va., June 5 -- United States Patent no. 12,279,097, issued on April 15, was assigned to FOSTER ELECTRIC COMPANY Ltd. (Tokyo).

"Vibration plate and method for manufacturing vibration plate" was invented by Yusuke Sai (Tokyo) and Hirotsugu Nakayama (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A diaphragm for an electroacoustic transducer includes a paper substrate containing cellulose fibers as a main component and is configured such that a first surface region with a predetermined thickness from a first surface of the paper substrate has a greater total amount of coloring particles than a second surface region with a predetermined thickness from a second surface of the paper substrate, th...