Patent ID: 6582805
Filing Date: 2003-06-24
Classification: C03C,G09F,Y10T

Abstract:
A substrate labeled with a composite material, comprising:(a) a fired ceramic body comprising a base layer, said base layer including: (i) a first glassy phase; and (ii) a first refractory phase interspersed with said first glassy phase, said first glassy phase being capable of wetting a substrate at an application temperature; wherein based on the amount of first refractory phase in the base layer, the base layer exhibits dimensional and structural integrity at application temperature and wherein base layer is attached to the substrate; and (b) a top layer provided on said fired ceramic body, wherein said top layer consists essentially of a refractory material selected from the group consisting of a metal, an intermetallic material, a metal alloy, and combinations thereof, wherein there is sufficient color contrast between said top layer and said fired ceramic body such that a code pattern is optically discernible, and wherein said composite material includes said code pattern.