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AssigneePhilip Morris USA Inc.
InventorsJohn B. Paine III, Zuyin Yang, Kent B. Koller, Jay A. Fournier, Charles E. Thomas JR., Timothy S. Sherwood, Zhaohua Luan, Shuzhong Zhuang, Jose M. G. Nepomuceno, Diane L. Gee, Georgios D. Karles
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A smoking article such as a cigarette comprises a tobacco rod and a filter component having a cavity filled with spherical beaded carbon. As mainstream tobacco smoke is drawn through the filter component, targeted gas phase smoke constituents are removed as the smoke passes through the carbon. During the filter manufacturing process the spherical beaded carbon flows like a liquid and substantially completely fills the cavity. Point-to-point contact between the spherical beads together with substantially complete filling of the cavity produces minimal channeling of ambulatory gas phase as well as maximum contact between the gas phase and the carbon surface of the spherical beads during smoking.
A cigarette filter including a beaded, activated carbon of a spherical form and of a pre-selected diameter.
A cigarette comprising a tobacco rod and a cigarette filter including a beaded, activated carbon of a spherical form and of a pre-selected diameter.
A cigarette comprising a tobacco rod and a filter including a cavity filled with spherical beaded carbon for removing at least one mainstream tobacco smoke constituent from mainstream tobacco smoke as such smoke is drawn through the filter.
Dependencies are inferred from the claim text.