Filter design for improving sensory profile of carbon filter-tipped smoking articles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 7, 2013
Grant Date -
Jan 5, 2012
app pub date -
Jan 18, 2011
filing date -
Oct 9, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter for a smoking article, which includes an upstream segment having a carbon filter and a downstream segment of filtering material. The upstream segment includes a carbon filter with a hollow tubular member concentrically positioned within the carbon filter, and one or more holes around an outer circumference of the hollow tubular member to allow mainstream smoke to bypass the carbon filter during the first puff. During use, the hollow tubular member has a lower resistance to draw than the carbon filter during an initial puff or puffs, and after the initial puff or puffs, mainstream smoke is drawn through the carbon filter.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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