Multi-compartment expandable filter for a smoking product
US5845648A · kind A · utility
18Cited by
6References
5Claims
0Family size
Inventor
Key dates
| Filing date | Jun 3, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jun 3, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A filter which will be attached to the end of a smoking product such as a cigarette. It would have a normal filter connected to the tube of tobacco, with a dual chamber which holds fine tobacco dust particles in one chamber. The other chamber would contain a plurality of loose fibers and would be connected to another normal cigarette filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.