US Patent Application No: 2012/0024,304

Number of patents in Portfolio can not be more than 2000

Filter Element Comprising Multifunctional Fibrous Smoke-Altering Material

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Abstract

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A filter element for use in a smoking article and providing filtration of particulate material and gaseous components of mainstream smoke is provided. The filter element includes a segment of fibrous tow comprising a plurality of individual filaments, wherein each individual filament includes a plurality of adsorbent material particles at least partially encapsulated with a removable encapsulant imbedded therein. The individual filaments may further include an outer coating that provides a plurality of reactive groups adapted for reaction with one or more components of mainstream smoke. Alternatively, the multifunctional filter element combines different fibrous filter materials, such as cellulose acetate or polyolefin filaments combined with activated carbon filaments and at least one of ion exchange filaments and catalytic filaments. A method of providing a cellulose acetate fibrous tow containing an imbedded adsorbent material is provided, wherein a plurality of encapsulated adsorbent particles are mixed with a cellulose acetate dope.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
R. J. REYNOLDS TOBACCO COMPANYWINSTON-SALEM, NC764

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sebastian, Andries Don - 16 8

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Patent Info (Count) # Cites Year
 
PAPETERIES DU LEMAN (1)
8,580,081 Paper for smoking article having low ignition propensity properties 0 2011