Amorphous inorganic ceramic material and method of producing...

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Reexamination Certificate

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C428S364000, C442S327000, C442S335000

Reexamination Certificate

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07662473

ABSTRACT:
An amorphous inorganic ceramic material including silicon, carbon and oxygen is provided. In the ceramic material, the average elemental ratio between silicon, carbon and oxygen is represented by a compositional formula:in-line-formulae description="In-line Formulae" end="lead"?SiCaObin-line-formulae description="In-line Formulae" end="tail"?wherein, a is a number that satisfies: 0.5≦a≦3.0, and b is a number that satisfies 0.5≦b≦4.0), the material has a siloxane skeleton formed of Si—O—Si bonds, and the hydrogen mass fraction is within a range from 0 to 1% by mass. The material exhibits excellent heat resistance, wettability with other materials, strength and elastic modulus, and is useful as a reinforcing material for composite materials, or as an exhaust gas filter material or the like.

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