Patent 7417204 was granted and assigned to LG on August, 2008 by the United States Patent and Trademark Office.
A cooking apparatus includes a housing including a cooking chamber, a heating unit detachably mounted in the housing, and a power connection portion for connecting the heating unit to an external power source. The heating unit can heat food when the heating unit is located in the housing, and the heating unit can independently heat food when the heating unit is removed from the housing.