ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,501, issued on Feb. 10, was assigned to LINE PLUS Corp. (Gyeonggi-Do, South Korea).

"Method, computer device, and non-transitory computer-readable record medium to display activity time information for chatroom" was invented by Dae Eun Yoon (Seongnam-si, South Korea), EuGene Ko (Seongnam-si, South Korea), Soon Hyun Kwon (Seongnam-si, South Korea), Daeun Jung (Seongnam-si, South Korea), SeonYoung Kang (Seongnam-si, South Korea), Chaewon Jung (Seongnam-si, South Korea) and Seo Hyun Cho (Seongnam-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a method, a computer device, and a non-transitory computer-readable record medium...