US4183364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco refining process
Assignee: Individual
•
Filing: 1976-12-07
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Granted: 1980-01-15
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Expires: 1996-12-07
Abstract
Abstract A process for refining tobacco for cigarette use so that the end product is free of resin and tar and virtually free of nicotine, which affords economics in the processing procedure. The tobacco is initially steeped in a hot solution of Potassium Metabisulfite (K 2 S 2 O 5 ) or Potassium Sulphate (K 2 SO 4 ) and then boiled in a solution of Potassium Sulfate and Potassium Nitrate. The tobacco is then air dried and sprayed with flavoring material.
Inventors
- 👤 Osman H. Gumushan, deceased
- 👤 administrator by Hatice Gumushan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:10
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/24; A24B15/241; A24B15/243; A24B15/28; A24B15/287
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A refining process for eliminating tars and nicotine from tobacco comprising the steps of: a. steeping fresh shredded tobacco in a hot dilute aqueous bath of 0.1% to 0.3% Potassium Metabisulfite solution (K 2 S 2 O 5 ) for a period of three to six hours and subquently extracting the solution from the tobacco, b. immersing the tobacco in a boiling aqueous solution of one to three percent gram ratio of Potassium Sulfate (K 2 SO 4 ) and one to three percent gram ratio of Potassium Nitrate (KNO 3 ) for a period of one to three hours and subquently extracting the solution from the tobacco, c. drying the tobacco under a temperature ranging from thirty-five to fifty degrees centigrade.
Claim 2
Dependent Claim
122 words
A refining process for eliminating tars and nicotine from tobacco comprising the steps of: a. steeping fresh shredded tobacco in a hot dilute aqueous bath of 0.1% to 0.3% Potassium Metabisulfite solution (K 2 S 2 O 5 ) for a period of three to six hours and subquently extracting the solution from the tobacco, b. immersing the tobacco in a boiling aqueous solution of one to three percent gram ratio of Potassium Sulfate (K 2 SO 4 ) and one to three percent gram ratio of Potassium Nitrate (KNO 3 ) for a period of one to three hours and subquently extracting the solution from the tobacco, c. drying the tobacco under a temperature ranging from thirty-five to fifty degrees centigrade.
Claim 3
Dependent Claim
44 words
The process as recited in claim 1 in which the tobacco is subsequently washed with an organic solvent which is then extracted from the tobacco, and the tobacco subsewuently dried in air at a temperature ranging from twenty-five to forty-five to forty-five degrees centigrade.
Claim 4
Dependent Claim
32 words
The process as recited in claim 2 in which the tobacco is compressed under a pressure of 150 to 250 kilograms per square decimeter for a period of twelve to twenty-four hours.
References Cited (Backward Citations)
US1294310A
Cited
US2170107A
Cited
US3046997A
Cited
US3353541A
Cited
US3860012A
Cited
US3995646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |