Tobacco – Tobacco users' appliance – Device used for smoking
Reexamination Certificate
2005-03-08
2005-03-08
Walls, Dionne A. (Department: 1731)
Tobacco
Tobacco users' appliance
Device used for smoking
C131S202000, C131S342000, C131S331000
Reexamination Certificate
active
06863074
ABSTRACT:
Cigarette filters, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of an unfunctionalized porous polyaromatic resins, which is capable of removing at least some of at least one gas phase constituent from mainstream smoke through sorption. The unfunctionalized porous polyaromatic resin may be a polymerization product of non-polar styrene and divinyl benzene. Various gas phase constituent can be removed from mainstream tobacco smoke, such as dienes, furans, pyrroles, aromatics and ketones, for example. The cigarette filters and cigarettes can provide low resistance-to-draw and/or high total particulate matter delivery. Additionally, the unfunctionalized porous polyaromatic resin may further include flavorant(s).
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Written Opinion for PCT/US03/26745 dated Aug. 10, 2004.
Charles E. Thomas et al., Puff-by Puff Mainstream Smoke Analysis by Multiplex Gas Chromatography-Mass Spectrometry, Beitrage Zur Tabakforschung International, Contributions to Tobacco Research, vol. 19-No. 7, Oct. 2001, ppgs 345-351, Philip Morris USA.
Notification of Transmittal of the International Search Report or the Declaration dated Apr. 13, 2004 for PCT/US03/26745.
Koller Kent B.
Thomas, Jr. Charles Edwin
Xue Lixin
Yu Liqun
Burns Doane Swecker & Mathis L.L.P.
Philip Morris USA Inc.
Walls Dionne A.
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