Cigarette filter

Details Cigarette filter Cigarette filter

1992-06-12

1994-11-01

Bahr, Jennifer

Tobacco

Smoke separator or treater

131342, 131339, A24D 304

Patent

active

053600231

ABSTRACT:
Cigarettes include a filter element which have a gathered web of paper incorporating a carbonaceous material. The paper is gathered so as to include a plurality of longitudinally extending channels, and the channels provide a cross-sectional void area of about 5 to about 30 percent of the filter element.

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