Cigarette with adsorbent at tip end thereof

Details Cigarette with adsorbent at tip end thereof Cigarette with adsorbent at tip end thereof

2005-03-01

2005-03-01

Walls, Dionne A. (Department: 1731)

Tobacco

Tobacco users' appliance

Device used for smoking

C131S202000, C131S203000, C131S361000, C131S363000, C131S360000

Reexamination Certificate

active

06860273

ABSTRACT:
A zone or plug of porous adsorbent material, primarily activated carbon, is placed in the tobacco rod of a cigarette a short distance from the lighting end thereof. The amount of activated carbon is sufficient for effective removal of volatile smoke constituents while allowing the cigarette to burn continuously. The activated carbon traps volatile smoke constituents in close proximity to the burning coal in the first puffs of the cigarette. As the cigarette continues to burn, the burning coal consumes the activated carbon. The adsorbed smoke constituents are effectively removed without releasing them back into the mainstream smoke. Following the consumption of the activated carbon in the tobacco rod, the cigarette is unchanged from a cigarette of conventional design.

REFERENCES:
patent: 3297038 (1967-01-01), Homburger
patent: 3494366 (1970-02-01), Starbuck et al.
patent: 3605756 (1971-09-01), Stewart
patent: 4793365 (1988-12-01), Sensabaugh, Jr. et al.
patent: 4924886 (1990-05-01), Litzinger

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