Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2006-04-11
2006-04-11
Stein, Stephen (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C428S697000, C428S698000, C428S702000, C428S336000, C156S089110, C156S089240, C156S089270
Reexamination Certificate
active
07026039
ABSTRACT:
Refractory coatings comprising unstabilized zirconia, silica, and, optionally, zircon and/or mullite are disclosed herein. The unstabilized zirconia, silica, and optional zircon and/or mullite are applied as a slurry onto ceramic substrates such as silicon carbide and fired. The refractory coatings of the present invention maintained good edge definition and color when applied to ceramic substrates and subjected to temperatures over 1100° C.
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Saint-Gobain Ceramics & Plastics, Inc.
Stein Stephen
Toler Larson & Abel, LLP
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