Tobacco smoke filter containing particulate additive
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United States of America Patent
Stats
-
May 7, 1991
Grant Date -
N/A
app pub date -
Sep 29, 1989
filing date -
Oct 5, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tobacco smoke filter comprising a rod of tobacco smoke filtering material incorporating particulate additive, wherein at least some of the particulate additive is concentrated on one or a restricted number of threads and/or strips incorporated within the remaining body of filtering material, the additive adhering to said thread(s) and/or strip(s).
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