Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Reexamination Certificate
2011-03-01
2011-03-01
Group, Karl E (Department: 1731)
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
C501S027000, C501S029000, C501S032000, C423S345000
Reexamination Certificate
active
07897534
ABSTRACT:
Precursor materials and methods of making are disclosed. The precursor materials include at least one of a silica source, and a carbon source, with or without liquid and a binder The methods described include pyrolyzing the precursor material to form a carbonaceous mixture and heat treating the mixture for a pre-determined time and at an elevated temperature during which carbon and/or nitrogen react with silica in the mixture to form carbides and/or nitrides. The carbides and nitrides formed from said methods may be used as blowing agents in a glass, ceramic, or metal forming processes or for promoting dispersion of the carbides and nitrides throughout a glass, ceramic, or metal composite.
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Biscan Giang
Hojaji Hamid
Melmeth David Leslie
Pham Thinh
Stevens Mark G.
Gardere Wynne & Sewell LLP
Group Karl E
James Hardie Technology Limited
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