| 发明名称 |
BIODEGRADABLE TOBACCO SMOKE FILTERS |
| 摘要 |
The invention provides a cigarette filter (1) the biodegradation of the material (3) which is assisted by the incorporation of swellable means in the filter so that upon exposure to moisture the volume of the filter is increased, preferably to the extent of breaking open a filter wrap (2) which enclosed it.
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| 申请公布号 |
CA2151471(C) |
申请公布日期 |
1999.12.14 |
| 申请号 |
CA19942151471 |
申请日期 |
1994.01.17 |
| 申请人 |
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发明人 |
SINCLAIR, NEIL MURRAY;DART, ROBERT KINSEY |
| 分类号 |
A24D3/04;A24D3/08;A24D3/10;A24D3/14;C08L101/16;(IPC1-7):A24D3/00 |
主分类号 |
A24D3/04 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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