ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,090, issued on May 13, was assigned to ZERC (Seoul, South Korea).

"Radiation cooling device using ceramic nanoparticle mixture" was invented by Heon Lee (Seoul, South Korea), Soo Min Son (Seoul, South Korea), Dong Woo Chae (Seoul, South Korea) and Han Gyu Lim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a technical idea of cooling the surface of a material or the internal temperature under the material by emitting heat under an element to the outside while minimizing absorption of light in the solar spectrum, and more particularly to a technology for developing a material having a high transmitt...