Filter for cigarette smoke
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 6, 1981
Grant Date -
N/A
app pub date -
Apr 23, 1979
filing date -
Apr 22, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Loading Importance Indicators... 
Abstract
A cigarette filter composed of a bundle of cellulose acetate filaments having at least two different filament denier sizes randomly distributed in the direction perpendicular to the longitudinal axis of said filter.
Loading the Abstract Image...
OK
First Claim
Family
Loading Family data...
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