ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,309, issued on May 27, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Refrigerator with vacuum insulation housing a heat interchanger" was invented by Wonyeong Jung (Seoul, South Korea) and Deokhyun Youn (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerator includes an inner case, an outer case, a vacuum space, and a liquid-gas interchanger. The inner case defines an exterior appearance of a storage space. The outer case is spaced apart a predetermined distance from the inner case. The vacuum space is provided between the inner case and the outer case, and maintains a vacuum to insulate the inner case from the...