Compositions: ceramic – Ceramic compositions – Refractory
Reexamination Certificate
2005-03-22
2005-03-22
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Refractory
C501S097200, C501S097300, C502S200000, C264S628000, C264S647000, C264S659000
Reexamination Certificate
active
06869902
ABSTRACT:
A silicon nitride porous body (5) obtained by nitriding a molded body having metallic silicon (3) as a main component, the porous body having a porous structure with an average pore diameter of 3 μm or above, and wherein the total content of silicon and nitrogen is 95% or above and the nitridation ratio of silicon is 90% or above. The silicon nitride porous body has a porous structure with a large average pore diameter, with a test specimen cut out from the porous body exhibiting large thermal conductivity and a small thermal expansion coefficient, and can be suitably used in a component for purifying gas and/or solution such as a ceramic filter.
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Translation of Japanese document 9-067167, Mar. 1997.
Inoue Katsuhiro
Kawasaki Shinji
Masuda Masaaki
Morimoto Kenji
Sakai Hiroaki
Group Karl
NGK Insulators Ltd.
Parkhurst & Wendel L.L.P.
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