Chemical absorbent
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United States of America Patent
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Jan 13, 2009
Grant Date -
Mar 18, 2004
app pub date -
Oct 19, 2001
filing date -
Oct 19, 2000
priority date (Note) -
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Abstract
A chemical absorbent comprises a hydrated mixture of a major proportion of a pharmaceutically acceptable hydroxide of a Group II metal and a minor proportion of silica, the chemical absorbent being substantially free of Group I metal ions. The chemical absorbent is particularly useful in low flow or closed circuit anaesthesia, and is advantageous in that it does not react with volatile anaesthetic agents in such a way as to cause the build up of toxic substances within an anaesthetic breathing circuit.
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