Producing method of tobacco raw material
US10624387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2017 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Apr 21, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24B15/32
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A producing method of a tobacco raw material containing a flavor constituent, comprises: a step A for heating a tobacco raw material in a closed space which is treated with alkali and for taking a flavor constituent released in the gas phase from the tobacco raw material to an outside of the closed space; a step B for allowing a first solvent to capture the flavor constituent by bringing the flavor constituent released in the gas phase in the step A into contact with the first solvent which is a liquid substance at normal temperature on the outside of the closed space; a step C for supplying a second solvent to the tobacco raw material in the closed space after the step A and for taking a normal component which is released as the liquid phase from the tobacco raw material to the second solvent, together with the second solvent to the outside of the closed space; and after the steps B and C, the step D for adding the first solvent capturing the flavor constituent in the step B to the tobacco raw material from which the flavor constituent is released to the outside of the closed space in the step A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.