Broad-band absorptive tape for microwave ovens

Abstract

Absorptive tape or gasket for microwave ovens, set up in the leakage path of microwave energy, and filling at least partially such passage, consisting in an absorptive magnetic compound: where the compound consists in a powder or mixture of powders of ferrites, in an organic matrix (such as a plastic, rubber, polymer, etc.), where this or these ferrite(s) is (are) represented by the general formula MO(Fe.sub.2 O.sub.3), where M represents a bivalent metal, or mixture of bivalent metals, such as Fe, Ni, Cu, Zn, Mg, with a weight percentage of over 80%, and where this compound does present no resonance effects, i.e. presents a Q-factor substantially equal or less than unity, over the frequency range of 2,45 to over 12 GHz.

Dependencies are inferred from the claim text.