Low fire-spreading cigarette

Details Low fire-spreading cigarette Low fire-spreading cigarette

2005-03-01

2005-03-01

Walls, Dionne A. (Department: 1731)

Tobacco

Tobacco or tobacco substitute product or component part thereof

With ash retainer or means to prevent or retard burning

C131S365000, C131S360000

Reexamination Certificate

active

06860274

ABSTRACT:
A low fire-spreading cigarette has a tobacco section including a columnar tobacco filler material, an inside wrapper paper sheer wrapping the outer circumferential surface of the columnar tobacco filler material and an outside wrapper paper sheet wrapping the outer circumferential surface of the inside wrapper paper sheet. The heat conductivity of the inside wrapper is 0.5 W·K−1·m−1or more and the heat conductivity of the outside wrapper paper sheet is less than 0.5 W·K−1·m−1.

REFERENCES:
patent: 4998543 (1991-03-01), Goodman et al.
patent: 5203355 (1993-04-01), Clearman et al.
patent: 5327915 (1994-07-01), Porenski et al.
patent: 5921249 (1999-07-01), Hampl, Jr.
patent: 54-151198 (1979-11-01), None
patent: 56-144081 (1981-11-01), None
patent: 60-59199 (1985-04-01), None
patent: 63-85200 (1988-04-01), None
patent: 7-300795 (1995-11-01), None
patent: 2572488 (1996-10-01), None

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