US3746012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making expanded reconstituted tobacco
Assignee: Philip Morris USA Inc
•
Filing: 1972-01-17
•
Granted: 1973-07-17
•
Expires: 1992-01-17
Abstract
Abstract An expanded reconstituted tobacco product is produced by forming a slurry of tobacco plant parts and a binder of tobacco derived pectins in an aqueous medium into which a relatively small amount of low boiling alkanes or volatile aliphatic hydrocarbons are dispersed. An emulsifying agent may be added to obtain a better dispersion. The mixture is cast into sheet or web form and is then rapidly heated to a temperature sufficient to volatilize out substantially all of the hydrocarbons and water thereby producing a porous spongy tobacco product of increased thickness and lower density than an untreated reconstituted tobacco.
Inventors
- 👤 E Deszyck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12; A24B3/00; A24B3/18; A24B3/182
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
20 words
The process of claim 1 in which the hydrocarbon is selected from the group consisting of heptane and petroleum ether.
Claim 2
Dependent Claim
31 words
The process of claim 1, wherein at step (c) a flavoring emulsifier is added in an amount between about 1 and 5 parts per 100 parts of tobacco fines by weight.
Claim 3
Dependent Claim
12 words
The process of claim 3, in which the emulsifier is tobacco resins.
Claim 4
Dependent Claim
16 words
The process of claim 3, in which the emulsifier is licorice or a salt of glycyrrhizin.
Claim 5
Dependent Claim
31 words
The process of claim 1, wherein at step (c) a non-flavoring emulsifier is added in an amount between about 0.0002 and 0.2 parts per 100 parts of tobacco fines by weight.
Claim 6
Dependent Claim
18 words
The process of claim 6, in which the non-flavoring emulsifier is stearic acid or an alkaline salt thereof.
Claim 7
Dependent Claim
19 words
The process of claim 6, in which the non-flavoring emulsifier is lauryl ether sulfate or an alkaline salt thereof.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |