Patent US3121433A successfully refreshed from Google Patents.
US3121433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of smoking products
Assignee: AMF Inc
•
Filing: 1961-08-08
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Granted: 1964-02-18
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Plunkett Richard Allan
- 👤 Shuman Albert Cornwell
- 👤 Whistler Roy Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:43
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/287; A24B15/10; A24B15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE METHOD OF MAKING TOBACCO SHEET WHICH COMPRISES COOKING A MIXTURE OF TOBACCO IN WATER, ADDING POTASSIUM HYDROXIDE TO THE COOKED TOBACCO MIXTURE AND FURTHER COOKING SAME, ACIDIFYING THE COOKED TOBACCO MIXTURE WITH NITRIC ACID TO FORM POTASSIUM NITRATE THEREIN, ADDING A DRY GROUND TOBACCO DUST TO FORM A SLURRY, FORMING SAID SLURRY INTO A SHEET AND DRYING SAID SHEET, WHEREBY THE POTASSIUM NITRATE FORMED IN THE PRODUCT IMPROVES THE BURN CHARACTERISTICS OF THE FINISHED SHEET.
Claim 2
Independent Claim
76 words
THE METHOD OF MAKING TOBACCO SHEET WHICH COMPRISES COOKING A MIXTURE OF TOBACCO IN WATER, ADDING POTASSIUM HYDROXIDE TO THE COOKED TOBACCO MIXTURE AND FURTHER COOKING SAME, ACIDIFYING THE COOKED TOBACCO MIXTURE WITH NITRIC ACID TO FORM POTASSIUM NITRATE THEREIN, ADDING A DRY GROUND TOBACCO DUST TO FORM A SLURRY, FORMING SAID SLURRY INTO A SHEET AND DRYING SAID SHEET, WHEREBY THE POTASSIUM NITRATE FORMED IN THE PRODUCT IMPROVES THE BURN CHARACTERISTICS OF THE FINISHED SHEET.
References Cited (Backward Citations)
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Cited
US2734510A
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US720830A
Cited
US1068403A
Cited
US2485670A
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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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |