Cigarette smoke filter system
US5638833A · kind A · utility
14Cited by
72References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1996 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Feb 26, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24F13/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A cigarette smoke filter is provided for use in a smoker's accessory for filtering cigarette smoke, the filter comprises: a tubular filter normally of micro-fibres for removing particulate material from cigarette smoke and optionally an outer filter layer of activated carbon material or the like for adsorbing gaseous components from the cigarette smoke. The efficiencies of the tubular filters is such to remove substantially all of the particulate and gaseous components from the cigarette smoke so that the filtered smoke stream can be discharged into the surroundings free of any cigarette smoke smell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.