Smoking article with a restrictor
US9060546B2 · kind B2 · utility
2Cited by
164References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Jan 10, 2031 |
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.