Concentric core filter
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United States of America Patent
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-
Aug 4, 1998
Grant Date -
N/A
app pub date -
Feb 18, 1997
filing date -
Aug 19, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A ventilated cigarette filter having a tobacco smoke filtering core, a tubular body of air-permeable material around the core, and an outer wrapper engaged around the tubular body and providing in use for the lateral ingress of external air therethrough into the tubular body, the core comprising a plurality of longitudinally aligned plugs of which one is an unwrapped buccal end plug of material which is the same as or similar to that of the surrounding tubular body so as to give a substantially uniform or integral buccal end appearance.
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