US4083371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of artificial tobacco
Assignee: Philip Morris Products SA
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Filing: 1976-07-27
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Granted: 1978-04-11
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Expires: 1996-07-27
Abstract
Abstract To produce artificial tobacco from a moist paste moist paste is predried to a 15 to 25% by weight liquid content by pressing out liquid and then shaped and hardened by final drying to convert it into artificial tobacco.
Inventors
- 👤 Monique Beringer
- 👤 Heinz Sporri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:34
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/16; A24B3/00; A24B3/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A process for the production of artificial tobacco which is free of natural tobacco, comprising the steps of intimately mixing finely divided plant parts with a liquid at a mixing station to form a homogeneous paste having a moisture content of 30-40% by weight; pressurizing and simultaneously conveying the paste past a liquid-permeable filter to reduce the moisture content to 15-25% by filtering out the surplus liquid; adding to the paste an effective amount of chemicals not later than upon completion of said conveying step; extruding the chemicals-containing pressurized paste through at least one nozzle to convert the paste into shaped artificial tobacco; and reducing the moisture content of shaped artificial tobacco to 6-18%.
Claim 2
Dependent Claim
114 words
A process for the production of artificial tobacco which is free of natural tobacco, comprising the steps of intimately mixing finely divided plant parts with a liquid at a mixing station to form a homogeneous paste having a moisture content of 30-40% by weight; pressurizing and simultaneously conveying the paste past a liquid-permeable filter to reduce the moisture content to 15-25% by filtering out the surplus liquid; adding to the paste an effective amount of chemicals not later than upon completion of said conveying step; extruding the chemicals-containing pressurized paste through at least one nozzle to convert the paste into shaped artificial tobacco; and reducing the moisture content of shaped artificial tobacco to 6-18%.
Claim 3
Dependent Claim
23 words
The process of claim 1, further comprising the steps of collecting the filtered-out liquid and returning the collected liquid to said mixing station.
Claim 4
Dependent Claim
37 words
The process of claim 2, wherein said plant parts contain albumins which are filtered out with the surplus liquid, and further comprising the step of segregating albumins from collected liquid prior to returning to said mixing station.
Claim 5
Dependent Claim
37 words
The process of claim 2, wherein said plant parts contain nitrate ions which are filtered out with the surplus liquid, and further comprising the step of segregating nitrate ions from collected liquid prior to said returning step.
Claim 6
Dependent Claim
37 words
The process of claim 2, wherein said plant parts contain chloride ions which are filtered out with the surplus liquid, and further comprising the step of segregating chloride ions from collected liquid prior to said returning step.
Claim 7
Dependent Claim
23 words
The process of claim 1, wherein said step of adding chemicals includes admitting chemicals to the paste immediately prior to said extruding step.
Claim 8
Dependent Claim
24 words
The process of claim 1, wherein said pressurizing step includes subjecting the paste to gradually increasing pressure in the course of said conveying step.
Claim 9
Dependent Claim
20 words
The process of claim 1, further comprising the step of heating pressurized paste in the course of said conveying step.
Claim 10
Dependent Claim
24 words
The process of claim 8, wherein said last mentioned step includes evaporating moisture from shaped artificial tobacco as a result of said heating step.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |