Smoking article with impaction filter segment
US8353298B2 · kind B2 · utility
5Cited by
147References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2007 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | May 17, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A smoking article having a cylinder of smoking material and a filter system attached to the cylinder of smoking material. The filter system includes an upstream plug of filtering material, a downstream plug of filtering material, and a cavity between the upstream plug of filtering material and the downstream plug of filtering material. A flow restrictor is positioned within the cavity and has at least one orifice and a series of perforations provide ventilation to the smoking article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.