Microwave ovens were introduced in the United States in 1967 by the Amana Co. Sharp LC had already introduced microwave ovens in Japan, where they were used commercially in hotels and restaurants. Microwave ovens were initially criticized as a gimmick that would spoil home cooking. The easy-to-use appliances never did replace home cooking, and most owners use the home microwave oven as a fast way to boil water for tea or coffee, heat frozen foods, defrost frozen foods for further cooking, or mak…