Tobacco raw material and method for its production
US5307821A · kind A · utility
9Cited by
4References
23Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24B15/28
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to a method for producing a tobacco raw material having at least a part of its surface coated with a silical gel, which comprises adding silica sol to the tobacco raw material and subjecting the silical gel to gelation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.