Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 19, 2011
Patent Application Number
10532638
Date Filed
October 13, 2003
Patent Primary Examiner
Patent abstract
A tobacco smoke filter which has a tar retention of at most 50% and comprises a relatively high draw resistance downstream filtering plug of at most 50% tar retention, a relatively low draw resistance upstream filter plug of at most 22% tar retention spaced longitudinally upstream therefrom, and a filter wrapper engaging around and joining the spaced plugs to define a cavity therebetween.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
