ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,775, issued on Nov. 18, was assigned to GOOIL SOLUTION Co. (Gyeongsangbuk-do, South Korea).
"Indoor environment control system using smart window" was invented by Jae Yeol Lee (Daegu, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An indoor environment control system using smart windows includes at least two smart windows of which colors change in accordance with the intensity of supplied voltages, an internal illuminance sensor disposed inside each of the smart windows and configured to measure internal illuminance, an external illuminance sensor disposed outside each of the smart windows and configured to measure external illuminance, ...