发明名称 |
Smoking article filter with annular restrictor and downstream ventilation |
摘要 |
A smoking article includes a tobacco rod adapted to produce mainstream smoke, and a filter having an upstream end portion and a downstream end portion. The filter includes a ventilated cavity and a flow restrictor segment having an impermeable insert at least partially surrounded by a tubular segment of an air transmissive material upstream of the cavity. In an embodiment, the tubular segment at least partially defines the cavity. |
申请公布号 |
US8109277(B2) |
申请公布日期 |
2012.02.07 |
申请号 |
US20080073543 |
申请日期 |
2008.03.06 |
申请人 |
LI SAN;JUPE RICHARD;KARLES GEORGIOS D.;WILLIAMS DWIGHT;OLEGARIO RAQUEL;BRAUNSHTEYN MICHAEL;GARTHAFFNER MARTIN;DWYER ROWLAND W.;PHILIP MORRIS USA INC, |
发明人 |
LI SAN;JUPE RICHARD;KARLES GEORGIOS D.;WILLIAMS DWIGHT;OLEGARIO RAQUEL;BRAUNSHTEYN MICHAEL;GARTHAFFNER MARTIN;DWYER ROWLAND W. |
分类号 |
A24D3/04 |
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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