Smoking article with a restrictor
US7878963B2 · kind B2 · utility
6Cited by
147References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Aug 20, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A smoking article filter includes a flow restrictor and a cavity downstream of the flow restrictor. The flow restrictor includes an orifice or flow channel for directing smoke into the cavity. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location downstream of the restrictor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.