Lightweight cigarette filter and cigarettes incorporating such f

Details Lightweight cigarette filter and cigarettes incorporating such f Lightweight cigarette filter and cigarettes incorporating such f

1992-10-22

1995-05-16

Bahr, Jennifer

Tobacco

Smoke separator or treater

Interior surface causes particular flow characteristic

131341, 131344, A24D 300, A24D 306

Patent

active

054151899

ABSTRACT:
A lightweight cigarette filter including a filter element containing filter material having a total Denier of less than 35,000 or a bulk density of less than 0.12 gcm.sup.-3 in which part of the volume of the filter is occupied by a space filler impervious to smoke flow therethrough and the bulk density of which is less than the bulk density of the equivalent amount of filter material which it replaces.

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patent: 4034765 (1977-07-01), Hall
patent: 4189511 (1980-02-01), Levers et al.
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patent: 4655736 (1987-04-01), Keith
patent: 4693265 (1987-09-01), Norman
patent: 4862905 (1989-09-01), Green, Jr. et al.
patent: 4874004 (1989-10-01), Borowski et al.
patent: 4924888 (1990-05-01), Perfetti et al.

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