Improved Method Of Producing A Liquid Tobacco Extract
Patent No. EP4258908 (titled "Improved Method Of Producing A Liquid Tobacco Extract") was filed by Philip Morris on Dec 6, 2021. The application was issued on Nov 12, 2025.
Patent Summary
A method for producing a liquid tobacco extract comprises preparing tobacco material and heating it directly—without suspension in a liquid solvent—at an extraction temperature between 100°C and 160°C for at least 15 minutes. Volatile compounds released during this heating step are collected to form the liquid tobacco extract. The process incorporates microwave heating during at least one step, which may include a pre-treatment phase to rupture tobacco cells and increase nicotine availability. Optional enhancements include applying water to maintain moisture levels, impregnating the material with aerosol formers (e.g., glycerin or propylene glycol) to increase yield, or applying an alkali treatment. The resulting extract provides a controlled ratio of nicotine and flavor compounds while limiting undesirable tobacco constituents.
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Date
Description
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EP4258908
- Application Number
- EP21820624A
- Filing Date
- Dec 6, 2021
- Status
- Granted And Under Opposition
- Oct 10, 2025
- Publication Date
- Nov 12, 2025
- External Links
- Slate, Register , Google Patents