| 发明名称 |
CONCENTRIC SMOKING FILTER HAVING DISCRETE TOW AND WEB FILTER MEDIA |
| 摘要 |
A concentric smoking filter in which one of the filter media is a fibrous tow, such as fibrous cellulose acetate tow, and one of the filter media is a web material, such as paper, is provided. The filter improves the taste, particularly, of "ultra-light" cigarettes.
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| 申请公布号 |
CA2031727(C) |
申请公布日期 |
2001.04.10 |
| 申请号 |
CA19902031727 |
申请日期 |
1990.12.07 |
| 申请人 |
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发明人 |
ARTERBERY, CYNTHIA W.;CALLAHAM, W. TIMOTHY;KERITSIS, GUS D.;WHITE, MORRIS F., JR. |
| 分类号 |
A24D3/04;A24D3/06;A24D3/08;A24D3/10;A24D3/16;B01D39/16;(IPC1-7):A24D3/00 |
主分类号 |
A24D3/04 |
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代理人 |
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