ALEXANDRIA, Va., June 6 -- United States Patent no. 12,284,504, issued on April 22, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Speaker" was invented by Kihun Kim (Seoul, South Korea), Seunghark Paek (Seoul, South Korea), Heuisik Seo (Seoul, South Korea) and Jongwoo Kim (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker including a speaker enclosure including an upper surface, a lower surface and a side surface connecting the upper and lower surfaces; a diaphragm disposed in an inner accommodating space of the speaker enclosure and configured to generate sound waves by vibrating according to an electrical signal; a first phase plug spaced apart from the diaphragm; and...