U.S.
households owning a microwave oven increased from 15% in 1980 to 78% by 1989
Gormans New Product News reported the number of new microwave product introductions increased
from 278 in 1986 to almost 1000
in 1988
Microwave frequency of ~2.45 GHz ensures effective penetration into the food and even food
heating
Annual revenues of 3 billion dollars