Invention Grant
US08109277B2 Smoking article filter with annular restrictor and downstream ventilation
有权
带环形节流器和下游通风的吸烟制品过滤器
- Patent Title: Smoking article filter with annular restrictor and downstream ventilation
- Patent Title (中): 带环形节流器和下游通风的吸烟制品过滤器
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Application No.: US12073543Application Date: 2008-03-06
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Publication No.: US08109277B2Publication Date: 2012-02-07
- Inventor: San Li , Richard Jupe , Georgios D. Karles , Dwight Williams , Raquel Olegario , Michael Braunshteyn , Martin Garthaffner , Rowland W. Dwyer
- Applicant: San Li , Richard Jupe , Georgios D. Karles , Dwight Williams , Raquel Olegario , Michael Braunshteyn , Martin Garthaffner , Rowland W. Dwyer
- Applicant Address: US VA Richmond
- Assignee: Philip Morris USA Inc,
- Current Assignee: Philip Morris USA Inc,
- Current Assignee Address: US VA Richmond
- Agency: Buchanan Ingersoll & Rooney PC
- Main IPC: A24D3/04
- IPC: A24D3/04
Abstract:
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.
Public/Granted literature
- US20080216848A1 Smoking article filter with annular restrictor and downstream ventilation Public/Granted day:2008-09-11
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