Patent US3863645A successfully refreshed from Google Patents.
US3863645A
Expired / Lapsed
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Process for treating tobacco
Assignee: United States Department of Agriculture
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Filing: 1974-06-11
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Granted: 1975-02-04
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Expires: 1994-06-11
Abstract
Abstract Cured leaf tobacco is treated with fatty acid esters and alcohols, and then bulked overnight in preparation for curing and subsequent cigarette manufacture. The treated product, in comparison with untreated leaf, has a higher static burning rate and its smoke is lower in total particulate matter, lower in nicotine, lower in volatile phenols, lower in benzo(a)pyrene, and lower in benzo(a)anthracene. The result is an improved, safer smoking product.
Inventors
- 👤 Tien C Tso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:52
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/30; A24B15/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
21 words
The process of claim 1 in which the final concentration of the substance on the treated tobacco is about 480 ppm.
Claim 2
Dependent Claim
12 words
The process of claim 2 in which the substance is methyl caprate.
Claim 3
Dependent Claim
26 words
The process of claim 2 in which the substance is a mixture of from 40 to 50 percent 1-octanol and from 60 to 50 percent 1-decanol.
Claim 4
Dependent Claim
92 words
A process for improving the combustion properties of cured leaf tobacco and for decreasing, in the smoke of said tobacco, the amounts of particular matter, nicotine, volatile phenols, benzo(a)pyrene, and benzo(a)anthracene comprising treating said cured leaf tobacco by applying to the tobacco a substance selected from the group consisting of methyl caprate and a mixture of from 40 to 50 percent 1-octanol and from 60 to 50 percent 1-decanol, said substance being applied in an aqueous mixture containing a combination emulsifier and surface active agent, and then bulking the treated leaf tobacco.
Claim 5
Dependent Claim
21 words
The process of claim 5 in which the final concentration of the substance on the treated tobacco is about 480 ppm.
Claim 6
Dependent Claim
80 words
A smoking tobacco product which has been improved by increasing its static burning rate and by decreasing, in the smoke of said product, the amounts of particulate matter, nicotine, volatile phenols, benzo(a)pyrene and benzo(a)anthracene, said improved product having been prepared by applying to cured leaf tobacco a substance selected from the group consisting of methyl caprate and a mixture of from 40 to 50 percent 1-octanol and from 60 to 50 percent 1-decanol and then bulking the so-treated leaf tobacco.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |