A selectively permeable membrane microwave susceptor for use in food packaging is disclosed. The susceptor comprises a substrate having at least one absorbing coating and at least one reflecting coating deposited thereon. Either one or both of the absorbing coating or the reflecting coating can be varied...http://www.google.de/patents/US5254821?utm_source=gb-gplus-sharePatent US5254821 - Selectively microwave-permeable membrane susceptor systems
