Cigarette filter

Details Cigarette filter Cigarette filter

1981-03-19

1983-06-14

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

131361, 131362, 131365, 131 94, 131339, A24D 304, A24D 318

Patent

active

043877281

ABSTRACT:
A filter for a cigarette includes a porous filter rod circumscribed by a non-porous wrapper wherein the filter rod with the non-porous wrapper therearound is provided with grooves extending from one end thereof a preselected distance longitudinally therealong. The grooves are open to the atmosphere and may be oriented to extend to the mouth end of the filter when connected to a cigarette, to the tobacco end of the filter when connected to the cigarette, or non-connecting grooves which extend from each end of the filter element a preselected distance therealong.

REFERENCES:
patent: 3910288 (1975-10-01), Hammersmith et al.
patent: 4256122 (1981-03-01), Johnson

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