Biopolymer foams as filters for smoking articles

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United States of America Patent

PATENT NO 9226524
APP PUB NO 20120024306A1
SERIAL NO

13072166

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Abstract

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A process for preparing a filter plug for a smoking article, such as a cigarette, includes: (a) freeze-drying a solution of a biopolymer to form a structure; and (b) cutting the structure to a predetermined dimension, to thereby prepare a filter plug for a smoking article. Another process for preparing a filter plug for a smoking article, such as a cigarette, includes: (a) extruding a mixture of a foaming agent and a biopolymer comprising a protein to form a structure; and (b) cutting the structure to a predetermined dimension, to thereby form a filter plug for a smoking article.

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Patent Owner(s)

Patent OwnerAddress
PHILIP MORRIS USA INC6601 WEST BROAD STREET RICHMOND VA 23230

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lipowicz, Peter J Midlothian, US 43 2906
Liu, Shengsheng Richmond, US 39 466
Mishra, Munmaya K Manakin Sabot, US 190 3376
Sweeney, William R Richmond, US 101 3990

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