ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,797, issued on Aug. 5, was assigned to DAESOL AUSYS Co. LTD (Incheon, South Korea).
"Sound absorption board for electric vehicle" was invented by Min Ho Kwon (Incheon, South Korea), Jae Kyun Nam Gung (Incheon, South Korea) and JeongHyeon Heo (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Honeycomb structures, glass fiber mats, and polyurethane on both sides with respect to a perforated plate. A sound absorption hole is formed in at least one of the glass fiber mat and the polyurethane arranged on both sides of the honeycomb structure and passes through each cell, so that sound absorption performance in a high frequency band as wel...