Filter element comprising multifunctional fibrous smoke-altering material

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8720450
APP PUB NO 20120024304A1
SERIAL NO

12847228

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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, NC422

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sebastian, Andries Don Clemmons, US 29 92

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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Other [Check patent profile for assignment information] (2)
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R. J. REYNOLDS TOBACCO COMPANY (30)
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* Cited By Examiner

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