The principle of the induction cooker is the phenomenon of electromagnetic induction, which uses alternating current to pass through the coil to generate an alternating magnetic field with a constantly changing direction. Eddy current will appear inside the conductor in the alternating magnetic field (for reasons, please refer to Faraday's law of electromagnetic induction), this is caused by the vortex electric field pushing the movement of carriers (electrons in the pot, not iron atoms) in the conductor; the Joule heating effect of the eddy current heats the conductor, thereby achieving heating. Induction cookers are household appliances we often use. They are very popular among young people because they are easy to use and easy to carry. There are many brands of induction cookers on the market, but there are only a few brands with high market recognition. Therefore, registered trademarks have become a way to seize business opportunities. A must-have magic weapon. When registering a trademark for a brand, the first step is to figure out the trademark category to which the product belongs. Therefore, in the 45 categories of trademark classification, to which category does the microwave oven trademark registration belong? Which category does the induction cooker trademark registration belong to? We learned that the microwave oven belongs to the 11th category of lighting and air conditioning group 1104-civilian electrical equipment 110025: metal frame for stove 110140: stove 110161: gas stove 110170: electric stove 110170: electric stove 110204: kitchen stove (oven) 110230: barbecue stove 110247 : Alcohol stove 110248: Gasoline stove 110251: Gas stove rack C110006: Pancake stove C110008: Kerosene stove If comprehensive protection is required, full or multi-class trademark registration must be carried out. Relevant enterprises must choose the correct trademark according to the specific goods or services sold. category.