Tobacco processing
US7404406B2 · kind B2 · utility
7Cited by
85References
44Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2004 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Oct 14, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S432/50
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Tobaccos are cured in a manner so as to provide tobaccos having extremely low tobacco specific nitrosamine (TSNA) contents. Harvested Virginia tobacco is subjected to flue-curing so as to provide flue-cured tobacco. During the curing processing steps, contact of the tobacco with nitric oxide gases, such as those produced as combustion products of propane burning heating units, is avoided. Tobacco in curing barns is not subjected to direct-fire curing techniques, but rather, heat for tobacco curing can be provided by heat exchange or electrical heating methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.