Tobacco Smoke Filter
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United States of America Patent
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Issued Date -
Dec 27, 2007
app pub date -
Oct 19, 2004
filing date -
Oct 20, 2003
priority date (Note) -
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Abstract
A tobacco smoke filter containing a high activity activated carbon impregnated with a metal impregnant. The use of a relatively low level of impregnant, in combination with a base carbon having higher activity than that use in standard cigarette filters, is highly effective in removing HCN from cigarette smoke.
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