Microwave absorbing article
AssigneeISP Investments Inc.
InventorJoseph E. Japka
Life of this patent
Estimating the term…
Abstract
A microwave absorbing article of low density comprises a hollow or solid glass microsphere having a diameter of 1-100 microns, and, deposited thereon, a succession of layers of particulate iron material interspersed by a passivated iron skin.
Claims8
A microwave absorbing article of predetermined density comprising a hollow or solid glass microsphere having a diameter of 1-100 microns, and, deposited thereon, alternating layers of elemental iron material and passivated elemental iron in that order said article including at least two layers of iron and two layers of passivated iron in which the total thickness of the deposited iron layers if about 1-3 .mu.m.
Dependencies are inferred from the claim text.