Relating to smoking article filters
US8141559B2 · kind B2 · utility
0Cited by
3References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2004 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/163
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention describes a filter (1) with a first filter portion (6) comprising an adsorbent, for example carbon, and/or a catalyst, capable of reducing various vapor phase constituents of cigarette smoke. The adsorbent/catalyst is separated from a second filter portion by means of a barrier (2) having pores therein of pore size less than 0.1 μm. The invention also describes a smoking article in which a rod of smoking material, with or without encapsulated flavor, is attached to the above described filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.