Compositions: ceramic – Ceramic compositions – Refractory
Reexamination Certificate
2006-06-13
2006-06-13
Sample, David (Department: 1755)
Compositions: ceramic
Ceramic compositions
Refractory
C501S101000
Reexamination Certificate
active
07060642
ABSTRACT:
Refractories obtained by molding a refractory raw material composition containing a refractory raw material including graphite grains having an average grain size of 500 nm or less or a refractory raw material including graphite grains obtained by graphitizing carbon black and a refractory filler. Or refractories containing carbonaceous grains (A) selected from carbon black or graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of 80 ml/100 g or more, carbonaceous grains (B) selected from carbon black and graphite grains obtained by graphitizing carbon black and having a DBP absorption (x) of less than 80 ml/100 g, and a refractory filler. Refractories excellent in corrosion resistance, oxidation resistance and thermal shock resistance, especially carbon-contained refractories having a low carbon content are thereby provided.
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Ochiai Tsunemi
Takanaga Shigeyuki
Kyushu Refractories Co., Ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ochiai Tsunemi
Sample David
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