Process for producing tobacco filter to adsorb materials harmful to health, especially aldehydes in the smoke of tobacco
US4753250A · kind A · utility
11Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1985 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Oct 18, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A process for producing cigarette filters comprising a compound containing L-ascorbic acid and having the compound added to an adsorptional filter material in a quantity of 5-200% of the amount of said adsorptional filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.