Patent 9303915 was granted and assigned to Samsung on April, 2016 by the United States Patent and Trademark Office.
Disclosed herein is a door of a refrigerator in which a vacuum insulation is positioned in the inner core of the door to be spaced apart from the top face, bottom face, front face, rear face and both lateral faces of the door, and a foam insulation is uniformly disposed in the remaining space in the door.