Gas injection stone and process of manufacture thereof
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United States of America Patent
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Jan 18, 1994
Grant Date -
N/A
app pub date -
Dec 9, 1991
filing date -
Dec 8, 1990
priority date (Note) -
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Abstract
A gas injection stone is manufactured by embedding in a refractory compound a plurality of adjacent and abutting nets. Thereby, when the refractory compound is solidified and when the nets subsequently are removed by burning or melting, the result will be the formation within the stone of plural interconnected layers of interlinked gas channels.
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