Ventilated filter cigarette
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 1995
Grant Date -
N/A
app pub date -
Feb 24, 1993
filing date -
Feb 25, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a ventilated filter cigarette having a filter with three chambers, including a middle chamber containing an adsorbent. The strand-side chamber next to the middle chamber achieves a high pressure drop and a low tar retention by means of a smoke-permeable flow passage, such as a core made from smoke-permeable cellulose acetate fibers, that is enclosed by a casing made from virtually smoke-impermeable cellulose acetate fibers.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully