Tobacco – Smoke separator or treater – By chemical reaction – e.g. – ion-exchange – chelating,...
Reexamination Certificate
2007-01-23
2007-01-23
Mayes, Dionne W. (Department: 1731)
Tobacco
Smoke separator or treater
By chemical reaction, e.g., ion-exchange, chelating,...
C131S360000, C131S364000, C131S365000, C162S139000, C162S158000, C162S164200, C162S164400
Reexamination Certificate
active
10460632
ABSTRACT:
A smoking article composition and a method of making a smoking article composition comprising tobacco cut filler, cigarette paper and/or cigarette filter material further comprising a catalyst capable of converting carbon monoxide to carbon dioxide, wherein the catalyst comprises nanoscale catalyst particles dispersed within a porous aluminosilicate matrix. The catalyst can be formed by combining nanoscale catalyst particles or a metal precursor solution thereof with an alumina-silica sol mixture to form a slurry, gelling the slurry to form the co-gel, heating the co-gel to form a catalyst comprising nanoscale catalyst particles dispersed within a porous aluminosilicate matrix. The catalyst can be incorporated in tobacco cut filler, cigarette paper and/or cigarette filter material by spraying, dusting and/or immersion.
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Deevi Sarojini
Fournier Jay A
Gee Diane L.
Koller Kent B.
Luan Zhaohua
Mayes Dionne W.
Philip Morris USA Inc.
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