ALEXANDRIA, Va., May 12 -- United States Patent no. 12,627,929, issued on May 12, was assigned to Mirai Speaker Inc. (Tokyo).
"Speaker unit and speaker curved diaphragm" was invented by Hiroshi Tanaka (Tokyo) and Masahiro Suzuki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "[Problem]Provided is a high-performance and high-quality curved diaphragm speaker system that is capable of reproducing sounds in a plurality of bands and achieves performance sufficient for hard-of-hearing people and hearing people.[Solution]A speaker unit 10 of the present invention includes a first diaphragm 1 in a corn form, a second diaphragm 2 in a curved sheet form, and a driver unit 4 that drives both of the first diaphrag...