Cigarette filter
US9032970B2 · kind B2 · utility
1Cited by
3References
6Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Apr 30, 2009 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Sep 17, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/166
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a special, highly efficient cigarette filter. In particular, the invention relates to a new cigarette filter, in which materials of natural origin not used before in this special field are applied. More particularly, the present invention relates to a special, highly efficient cigarette filter, which can be used favorably for adsorbing the toxic components of the cigarette smoke, and neutralizing the free radicals produced during burning of the cigarette.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.