ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,563,344, issued on Feb. 24, was assigned to PIONEER Corp. (Kawasaki, Japan) and TOHOKU PIONEER Corp. (Tendo, Japan).
"Speaker device" was invented by Shintaro Niidera (Tendo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker device includes: a diaphragm that radiates sound; an edge arranged in an outer periphery of the diaphragm; an attachment part facing an outer peripheral region of the edge; and a connecting member held between the outer peripheral region of the edge and the attachment part, wherein the connecting member is adhered to at least one of the outer peripheral region or the attachment part, and the edge has a curved portion co...