US3760815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of reconstituted tobacco
Assignee: Philip Morris USA Inc
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Filing: 1971-01-06
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Granted: 1973-09-25
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Expires: 1991-01-06
Abstract
Abstract Tobacco parts are treated with ammonium salts of organic acids, added or formed in situ, in the presence of ammonium hydroxide to obtain an alkaline pH, to release tobacco pectins and form calcium and/or magnesium salts with the organic anions. The pectins act as a binding agent and together with the treated tobacco and precipitated salts constitute a mix that may be cast or otherwise treated to form a reconstituted tobacco product.
Inventors
- 👤 E Deszyck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:08
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
ammonium hydroxide and a carboxylic acid wherein the carboxylic acid is selected from the group of monobasic fatty acids of six to 18 carbon atoms, polybasic acids of two to 12 carbon atoms and mixtures thereof, b. adding sufficient ammonium hydroxide to bring said slurry to a pH of 9 to 10, c. releasing the tobacco pectins and forming insoluble calcium and magnesium carboxylates by holding said slurry at a temperature of about 25* to 110* C. for about one-half to 24 hours while maintaining said pH at 9 to 10 through the addition of ammonia, and d. drying the components of said slurry to form a homogeneous tobacco smoking product.
Claim 2
Dependent Claim
16 words
The method of claim 1, wherein the tobacco of step (a) is in finely divided form.
Claim 3
Dependent Claim
21 words
The method of claim 1, wherein said reagent comprises a polycarboxylic acid of two to 12 carbon atoms and ammonium hydroxide.
Claim 4
Dependent Claim
22 words
The method of claim 1, wherein said reagent comprises a monocarboxylic fatty acid having six to 18 carbon atom and ammonium hydroxide.
Claim 5
Dependent Claim
17 words
The method of claim 1, wherein said reagent comprises ammonium salts of said mono and polycarboxylic acids.
Claim 6
Dependent Claim
44 words
The method of claim 1, wherein the reaction is carried out in the presence of ammonium cations and organic acid anions derived from acids of the group consisting of oxalic, citric, malic, sebacic, tartaric, mellitic, vanillic, gluconic, stearic, lauric, oleic, linoleic and linolenic acids.
Claim 7
Dependent Claim
12 words
The method of claim 3, wherein the carboxylic acid is citric acid.
Claim 8
Dependent Claim
12 words
The method of claim 4, wherein the carboxylic acid is oleic acid.
Claim 9
Dependent Claim
11 words
The method of claim 5, wherein the salt is ammonium citrate.
Claim 10
Dependent Claim
9 words
The product produced by the process of claim 1.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |