Cigarette having reduced sidestream smoke
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 30, 2004
Grant Date -
Nov 28, 2002
app pub date -
Feb 21, 2002
filing date -
Jan 6, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cigarette includes an ignition element in contact with tobacco, surrounded by a composite outer wrapper. The outer wrapper is impervious to oxygen causing the tobacco to extinguish between puffs. The ignition element, however, has a longer static burn time than the tobacco and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element re-ignites the tobacco. One or more initially-occluded perforations in the outer layer maintain the uniformity in combustion of the tobacco and ignition element.
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