US4014349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoking material
Assignee: Imperial Group PLC
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Filing: 1975-11-10
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Granted: 1977-03-29
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Expires: 1995-11-10
Abstract
Abstract Manufacture of a smoking material by catalytic thermal degradation of carbohydrate material above 250° C, especially 250°-300° C, until the weight of solid residue is 50-90% (especially 65-90%) of the weight of original carbohydrate material, optionally bleaching, combining with a binder and fabricating to produce a tobacco simulating material.
Inventors
- 👤 James Forrester Morman
- 👤 James Brown Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:50
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/16; A24B15/165
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
In a process for the production of a tobacco substitute wherein a carbohydrate is subjected to catalytic thermal degradation in the presence of a non-toxic catalyst selected from the group consisting of a strong acid, a salt of a strong acid and a weak base, an alkali hydroxide or an alkali salt of a weak acid, the modification which comprises carrying out the degradation at a temperature significantly in excess of 250° up to 300° C until the weight of the residue is from 65 to 90% of the weight of the original carbohydrate and recovering said residue so as to avoid significant formation of anhydro-sugar and smaller organic molecules.
Claim 2
Dependent Claim
110 words
In a process for the production of a tobacco substitute wherein a carbohydrate is subjected to catalytic thermal degradation in the presence of a non-toxic catalyst selected from the group consisting of a strong acid, a salt of a strong acid and a weak base, an alkali hydroxide or an alkali salt of a weak acid, the modification which comprises carrying out the degradation at a temperature significantly in excess of 250° up to 300° C until the weight of the residue is from 65 to 90% of the weight of the original carbohydrate and recovering said residue so as to avoid significant formation of anhydro-sugar and smaller organic molecules.
Claim 3
Dependent Claim
11 words
Process according to claim 1 wherein the carbohydrate material is cellulose.
Claim 4
Dependent Claim
11 words
Process according to claim 1 wherein the carbohydrate material is starch.
Claim 5
Dependent Claim
12 words
Process according to claim 1 wherein the catalyst employed is ammonium sulphamate.
Claim 6
Dependent Claim
23 words
Process according to claim 1 wherein carbohydrate material in sheet or powder form is first impregnated with a solution of catalyst and dried.
Claim 7
Dependent Claim
28 words
A process according to claim 1 wherein said carbohydrate is in sheet form and is first impregnated with a solution of catalyst and dried before said catalytic degredation.
Claim 8
Dependent Claim
16 words
Process according to claim 1 wherein the recovered residue is fabricated to produce a tobacco-simulating material.
Claim 9
Dependent Claim
19 words
Process according to claim 1 wherein the recovered residue is combined with a binder and fabricated into a sheet.
References Cited (Backward Citations)
US2907686A
Cited
US3545448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |