Compositions: ceramic – Ceramic compositions – Refractory
Reexamination Certificate
2005-05-03
2005-05-03
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Refractory
C501S115000, C501S120000
Reexamination Certificate
active
06887810
ABSTRACT:
A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOxand Al2O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3and ranges from 30:70 to 60:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.
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Bartha Peter
Klischat Hans-Jurgen
Weibel Guido
Wirsing Holger
Goodman & Teitelbaum, Esqs.
Group Karl
Refratechnik Holdings GmbH
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