Smokers filter

Details Smokers filter Smokers filter

2011-07-19

2011-07-19

Nguyen, Khanh (Department: 1746)

Tobacco

Tobacco users' appliance

Device used for smoking

C131S331000, C131S338000, C131S339000, C131S340000, C131S341000, C131S361000, C131S365000

Reexamination Certificate

active

07980250

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.

REFERENCES:
patent: 2994251 (1961-08-01), Pollmann
patent: 3690326 (1972-09-01), Davenport
patent: 4171705 (1979-10-01), Holst et al.
patent: 4492240 (1985-01-01), Hayes et al.
patent: 4564030 (1986-01-01), Jessup et al.
patent: 4807647 (1989-02-01), Hayes
patent: 5423336 (1995-06-01), Mentzel et al.
patent: 5839449 (1998-11-01), Banerjee et al.
patent: 6206007 (2001-03-01), Yoshida et al.
patent: 0 105 682 (1984-04-01), None
patent: 0 255 114 (1988-02-01), None
patent: 0 885 570 (1998-12-01), None
patent: 2 294 861 (1996-05-01), None
Search Report dated Feb. 6, 2003 in Great Britain Application No. 0224665.0 (1 page).

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