Abstract: A food container using a heating element, which container enhances convenience since a user can simply inject water toward the heating element by opening an inflow passage of an outer container without removing an inner container, and can keep the heating element stable in a simplified structure since a space containing the heating element inside the outer container and a space containing water are formed to be divided by a protrusion jaw but to communicate with each other.

Abstract: A food container using a heating element, which container enhances convenience since a user can simply inject water toward the heating element by opening an inflow passage of an outer container without removing an inner container, and can keep the heating element stable in a simplified structure since a space containing the heating element inside the outer container and a space containing water are formed to be divided by a protrusion jaw but to communicate with each other.

Abstract: A heating apparatus for an electromagnetic cooker and the manufacturing method has an improved electromagnetic induction characteristic and its capacity can be easily changed. The heating apparatus comprises a substrate made of an insulating material, a plurality of conductive fine lines formed in a spiral shape on the substrate and having a uniform thickness and width, and a pair of electrode terminals formed on the both ends of the plurality of fine lines, with for supplying a power source.

Abstract: A food weight detecting device for a microwave oven which can detect food weight exactly according to the speed variation of the rotating roller rolling on a base plate having a protrusion formed thereon with predetermined ascending and descending angles. According to the device, the possibility of incorrect weight detection due to such defects as corrosion or secular change of a parallel plate capacitor in the conventional capacitance- detection type device can be eliminated. Thus, reliability of automatic heating control is increased and an inexpensive motor which needs not be heat-resistant can be employed.