Tobacco – Smoke separator or treater – By chemical reaction – e.g. – ion-exchange – chelating,...
Reexamination Certificate
2004-06-16
2010-06-29
Tucker, Philip C (Department: 1791)
Tobacco
Smoke separator or treater
By chemical reaction, e.g., ion-exchange, chelating,...
C502S347000, C502S304000
Reexamination Certificate
active
07743772
ABSTRACT:
A component of a cigarette comprises a silver-based catalyst for the conversion of carbon monoxide to carbon dioxide. The silver-based catalyst comprises particles (e.g., nanoscale or larger sized particles) of metallic silver and/or silver oxide supported in and/or on metal oxide support particles. The silver-based catalyst can be incorporated into a cigarette component such as tobacco cut filler, cigarette paper and cigarette filter material to reduce the concentration of carbon monoxide in the mainstream smoke of a cigarette during smoking. The catalyst can also be used in non-cigarette applications.
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Deevi Sarojini
Sundar Rangaraj S.
Buchanan & Ingersoll & Rooney PC
Felton Michael J
Philip Morris USA Inc.
Tucker Philip C
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