Smoking articles with restrictor and aerosol former
US8353302B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2008 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Feb 12, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Provided is a smoking article including a smokeable filler with a high aerosol former content and a filter. Preferably, the smokeable filler includes about 4 wt % glycerin to about 35 wt % glycerin. The filter includes a cylindrical tube attached to the tobacco rod with tipping paper, a first filter segment at a location along said cylindrical tube adjacent and in a downstream relation to said tobacco rod, and a flow restricting filter segment at a location adjacent and in a downstream relation to the first filter segment. In an embodiment, the filter also includes a cavity adjacent and in a downstream relation to the flow restricting filter segment, and a ventilation zone at a location along the cavity including perforations that extend through the tipping paper and the cylindrical tube. Preferably, the ventilation zone is in a downstream relation to the flow restricting filter segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.