Low CO cigarette

Details Low CO cigarette Low CO cigarette

1996-01-29

1998-11-24

Weiss, John G.

Tobacco

Smoke separator or treater

Plural diverse elements

131341, A24D 304

Patent

active

058394494

ABSTRACT:
A cigarette smoking article achieves very low levels of CO and other gas phase components by means of substantial air dilution, but has an acceptable pressure drop and sufficient delivery of particulate matter to provide a flavorful smoke. The filter has two sections, an upstream section which has substantially no pressure drop thereacross and a downstream section which provides substantially all the pressure drop of the filter. Dilution air is admitted to the upstream section of the filter to mix with mainstream smoke before it passes through the downstream section of the filter and thereby reduce the CO and gas phase levels in the smoke.

REFERENCES:
patent: 2693193 (1954-11-01), Pelletier
patent: 3059649 (1962-10-01), Bernhard
patent: 3283762 (1966-11-01), Kissel
patent: 3486508 (1969-12-01), Sipos
patent: 3714949 (1973-02-01), King
patent: 3791265 (1974-02-01), Wescott et al.
patent: 4022222 (1977-05-01), Berger
patent: 4034765 (1977-07-01), Hall
patent: 4291712 (1981-09-01), Koster
patent: 4357950 (1982-11-01), Berger
patent: 4716912 (1988-01-01), Leonard
patent: 4898190 (1990-02-01), Deal
patent: 5090426 (1992-02-01), Tang
patent: 5105834 (1992-04-01), Saintsing et al.
patent: 5360023 (1994-11-01), Blakley et al.
patent: 5365951 (1994-11-01), Arterbery et al.
Research Disclosure No. 13201, Apr. 1975.

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