ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,381, issued on July 1, was assigned to SEOUL SEMICONDUCTOR Co. LTD. (Ansan-si, South Korea).
"Bulb-type light source" was invented by Jae Hyun Park (Ansan-si, South Korea), Seong Jin Lee (Ansan-si, South Korea) and Jong Kook Lee (Ansan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting device includes a substrate having a plurality of flat portions and a non-flat portion disposed between the flat portions, a plurality of light emitting sources disposed on the substrate, a fluorescent substrate layer covering one or more light emitting sources and converting a wavelength of a light from the light emitting source, and a connectio...