A method of preparing ceramic monolithic structures with an internal cavity and passageways is described. A thin sheet of a ceramic material is formed by spreading the material on a glass plate with a doctor blade. Individual sheets of the material are cut or punched to form predetermined holes, channels...http://www.google.com.au/patents/US4833000?utm_source=gb-gplus-sharePatent US4833000 - Ceramic monolithic structure having an internal cavity contained therein and a method of preparing the same
