US3924644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoking mixtures
Assignee: Imperial Group PLC
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Filing: 1973-11-13
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Granted: 1975-12-09
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Expires: 1993-11-13
Abstract
Abstract A smoking mixture characterized by having the general flavor of flue cured Virginia tobacco is formulated from a mixture of nicotine, a modified (thermally degraded) carbohydrate and flue cured Virginia tobacco. The mixture includes as a necessary flavorant isovaleric or Beta -methyl valeric acids and/or mixtures thereof in amounts from 0.02% to 0.2% by weight of the mixture.
Inventors
- 👤 Robert Craig Anderson
- 👤 James Andrew Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/16; A24B15/18; A24B15/28; A24B15/30; A24B15/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A SMOKING BLEND CHARACTERIZED GENERALLY BY THE FLAVOUR OF FLUE-CURED VIRGINIA TOBACCO, SAID BLEND COMPRISING A MIXTURE OF A MODIFIED CARBOHYDRATE AS SMOKE-PRODUCING FUEL, NICOTINE, AND AS A FLAVOURANT, A MEMBER OF THE GROUP CONSISTING OF ISOVALERIC ACID, B-METHYL VALERIC ACID, BUTYRIC ACID AND MIXTURES OF AT LEAST TWO OF THE SAID ACIDS, THE MODIFIED CARBOHYDROATE COMPRISING A THERMALLY DEGRADED CARBOHYDRATE PREPARED BY SUBJECTING THE CARBOHYDRATE TO CATALYZED DEGRADATION AT A TEMPERATURE OF AT LEAST 100*C UNTIL THE WEIGHT OF DEGRADED MATERIAL IS LESS THAN 90% OF THE DRY WEIGHT OF THE ORIGINAL CARBOHYDRATE AND THE PROPORTION OF FLAVOURANT ACIDS, COMPRISING FROM 0.02% TO 0.2% BY WEIGHT, OF THE SMOKING MIXTURE; SAID MIXTURE BEING BLENDED WITH FROM 30-70% BY WEIGHT THEREOF, FLUE-CURED VIRGINIA TOBACCO.
Claim 2
Dependent Claim
124 words
A SMOKING BLEND CHARACTERIZED GENERALLY BY THE FLAVOUR OF FLUE-CURED VIRGINIA TOBACCO, SAID BLEND COMPRISING A MIXTURE OF A MODIFIED CARBOHYDRATE AS SMOKE-PRODUCING FUEL, NICOTINE, AND AS A FLAVOURANT, A MEMBER OF THE GROUP CONSISTING OF ISOVALERIC ACID, B-METHYL VALERIC ACID, BUTYRIC ACID AND MIXTURES OF AT LEAST TWO OF THE SAID ACIDS, THE MODIFIED CARBOHYDROATE COMPRISING A THERMALLY DEGRADED CARBOHYDRATE PREPARED BY SUBJECTING THE CARBOHYDRATE TO CATALYZED DEGRADATION AT A TEMPERATURE OF AT LEAST 100*C UNTIL THE WEIGHT OF DEGRADED MATERIAL IS LESS THAN 90% OF THE DRY WEIGHT OF THE ORIGINAL CARBOHYDRATE AND THE PROPORTION OF FLAVOURANT ACIDS, COMPRISING FROM 0.02% TO 0.2% BY WEIGHT, OF THE SMOKING MIXTURE; SAID MIXTURE BEING BLENDED WITH FROM 30-70% BY WEIGHT THEREOF, FLUE-CURED VIRGINIA TOBACCO.
Claim 3
Dependent Claim
15 words
A smoking blend according to claim 1 wherein the modified carbohydrate is thermally degraded cellulose.
Claim 4
Dependent Claim
20 words
A smoking blend according to claim 1 wherein the flavourant is a mixture of isovaleric and Beta -methyl valeric acids.
Claim 5
Dependent Claim
24 words
A smoking blend according to claim 3 wherein the ratio by weight of isovaleric to Beta -methyl valeric acids is from 4:1 to 0.25:1.
Claim 6
Dependent Claim
12 words
A smoking blend according to claim 1 containing protein as a flavourant.
Claim 7
Dependent Claim
13 words
A smoking blend according to claim 5 wherein the protein is fat free.
Claim 8
Dependent Claim
17 words
A smoking blend according to claim 5 wherein the protein is casein, soya bean protein or zein.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |