发明名称 SMOKING ARTICLE FILTER
摘要 A filter for a smoking article comprising first and second sections, the first section being at the mouth end of the filter and comprising a cylindrical element circumscribed by a wrapper and having a hollow portion extending therethrough, and the second section being longitudinally aligned with and adjacent to the first section and comprising a filtration material. The second section comprises a particulate material in a circumferential region and extending to the end of the second section immediately adjacent the first section. Also provided is a smoking article incorporating a filter according to the invention.
申请公布号 EA014830(B1) 申请公布日期 2011.02.28
申请号 EA20090000818 申请日期 2007.11.20
申请人 BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED 发明人 DUKE MARTIN, GRAHAM
分类号 A24D3/04 主分类号 A24D3/04
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