Cigarette filter

Details Cigarette filter Cigarette filter

1980-12-22

1982-08-03

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

131338, 131339, 131340, A24D 304, A24D 300

Patent

active

043423221

ABSTRACT:
A filter for a cigarette includes a porous filter rod having a hollow tube therein extending from one end a preselected distance, the filter rod being circumscribed by a non-porous wrapper wherein the filter rod with the non-porous wrapper therearound is provided with at least one groove extending from one end thereof a preselected distance longitudinally therealong. The groove and the tube may extend from the same one end or may extend from opposite ends. Tipping material circumscribes the non-porous wrapper and is provided with flow-throgh openings therein in flow communication with the groove. The groove may be oriented to extend to the mouth end of the filter or the tobacco end when connected to a cigarette.

REFERENCES:
patent: 3389705 (1968-06-01), Levavi
patent: 3490461 (1970-01-01), Osmalov et al.
patent: 3910288 (1975-10-01), Hammersmith et al.
patent: 4022221 (1977-05-01), Berger

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