Tobacco smoke filter elements

Tobacco – Smoke separator or treater – By adding constituent to smoke stream

Reexamination Certificate

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Details

C131S328000

Reexamination Certificate

active

10683200

ABSTRACT:
This invention relates to the provision in a cigarette filter element of a capsule containing a deodorizer. The capsule is resistant to the handling endured before and during smoking, yet ruptures to release or expose the deodorizer upon extinguishing of the smoked cigarette. The deodorizer may comprise neutralizing or masking agents, or mixtures of both.

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patent: 3428045 (1969-02-01), Leake
patent: 3513859 (1970-05-01), Carty
patent: 3538924 (1970-11-01), Pruysers
patent: 3596665 (1971-08-01), Lindgard
patent: 3635226 (1972-01-01), Horsewell et al.
patent: 3991773 (1976-11-01), Walker
patent: 4391284 (1983-07-01), Sprecker et al.
patent: 4436101 (1984-03-01), Seatts
patent: 4865056 (1989-09-01), Tamaoki et al.
patent: 5174309 (1992-12-01), Park
patent: 5331981 (1994-07-01), Tamaoki et al.

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