Cigarette filter using intermetallic compounds

Details Cigarette filter using intermetallic compounds Cigarette filter using intermetallic compounds

2005-02-01

2005-02-01

Griffin, Steven P. (Department: 1731)

Tobacco

Smoke separator or treater

By chemical reaction, e.g., ion-exchange, chelating,...

C131S339000, C131S360000, C131S361000

Reexamination Certificate

active

06848450

ABSTRACT:
A filter such as a cigarette filter having a metal reagent which selectively binds with a gaseous component of a gas stream such as tobacco smoke. The metal reagent comprises nanometer or micrometer size clusters of a transition metal or alloy containing a transition metal. The transition metal can be incorporated in an intermetallic compound such as titanium aluminide or iron aluminide. The metal clusters can be incorporated in or on a support material such as silica gel, porous carbon or a zeolite. The metal reagent can remove the gaseous component by selectively binding to unsaturated hydrocarbons such as 1,3-butadiene. The binding can occur by insertion of a metal atom of the metal reagent into a C—H bond or a C—C bond of the gaseous component.

REFERENCES:
patent: 3647721 (1972-03-01), Salyer et al.
patent: 3716063 (1973-02-01), Litzinger
patent: 3878854 (1975-04-01), Albein et al.
patent: 4125118 (1978-11-01), Rudner
patent: 4193412 (1980-03-01), Heim et al.
patent: 4227899 (1980-10-01), Meny et al.
patent: 4396026 (1983-08-01), Grossman
patent: 4517995 (1985-05-01), Lyles
patent: 4656153 (1987-04-01), Wennerberg
patent: 4821750 (1989-04-01), Browne
patent: 5083579 (1992-01-01), Vanin et al.
patent: 5388594 (1995-02-01), Counts et al.
patent: 5462072 (1995-10-01), Browne et al.
patent: 5496785 (1996-03-01), Abler
patent: 5502019 (1996-03-01), Augustine et al.
patent: 5647383 (1997-07-01), Brodof et al.
patent: 6209547 (2001-04-01), Koller et al.
patent: 6224768 (2001-05-01), Navarre et al.
patent: 6273925 (2001-08-01), Alvin et al.
patent: 6342191 (2002-01-01), Kepner et al.
patent: 2150806 (1985-07-01), None
patent: 3-83571 (1991-04-01), None
patent: WO 9911358 (1999-03-01), None
Derwent Abstract123957 A, dated Jan. 26, 1977.

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