| 发明名称 |
Filter for tobacco smoke |
| 摘要 |
The present invention relates to a new type of filter for tobacco smoke, which filter has a diffusion portion, in which the smoke stream is separated from the outer air by means of a membrane, which is permeable to low molecular smoke constituents.
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| 申请公布号 |
US4033362(A) |
申请公布日期 |
1977.07.05 |
| 申请号 |
US19750553309 |
申请日期 |
1975.02.26 |
| 申请人 |
SVENSKA TOBAKS AB |
发明人 |
ALMQVIST, SVEN-OLOF;ENZELL, CURT R.;HJERN, LASSE O.;ARTHO, ANTOINE;KOCH, ROBERT |
| 分类号 |
A24D3/04;(IPC1-7):A24D1/04 |
主分类号 |
A24D3/04 |
| 代理机构 |
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