Cigarette filter

Details Cigarette filter Cigarette filter

1980-12-21

1985-02-12

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

A24D 304

Patent

active

044984880

ABSTRACT:
A cigarette filter includes a porous filter element attached to a cigarette, the element circumscribed by ventilating air ducts with an impermeable barrier therebetween so that smoke travels down the filter element and ventilating air travels down the ducts during use. The size of the ducts, the number of ducts, and the flow rate of ventilating air is so defined that substantially all of the smoke is dispersed immediately upon exiting the filter element.

REFERENCES:
patent: 3773883 (1973-11-01), Labbe et al.
patent: 3910288 (1975-10-01), Hammersmith et al.
patent: 3958579 (1976-05-01), Baker
patent: 4022221 (1977-05-01), Berger
patent: 4082098 (1978-04-01), Owens
patent: 4135523 (1979-01-01), Luke et al.

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