US3306307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of tobacco
Assignee: AMF Inc
•
Filing: 1965-04-15
•
Granted: 1967-02-28
•
Expires: 1985-04-15
Abstract
No abstract record available.
Inventors
- 👤 Richards Geoffrey Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:59
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12; H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/60; H03K4/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD FOR THE PRODUCTION OF RECONSITITUTED TOBACCO SHEET COMPRISING THE STEPS OF COOKING TOBACCO STEMS IN WATER AT A TEMPERATURE BETWEEN 120*C. AND 140*C. FOR PERIODS RANGING FROM TWO HOURS AT 140*C. TO ABOVE FIVE HOURS AT 120*C. FOLLOWED BY DILUTING WITH WATER AND SLUSHING AND THEN MECHANICALLY BEATING THE RESULTANT PULP FOR ABOUT FIVE MINUTES TO PRODUCE A REFINED PULP HAVING ADEQUATE FREENESS, AND THEREAFTER FORMING THE PULP INTO A SHEET.
Claim 2
Independent Claim
73 words
A METHOD FOR THE PRODUCTION OF RECONSITITUTED TOBACCO SHEET COMPRISING THE STEPS OF COOKING TOBACCO STEMS IN WATER AT A TEMPERATURE BETWEEN 120*C. AND 140*C. FOR PERIODS RANGING FROM TWO HOURS AT 140*C. TO ABOVE FIVE HOURS AT 120*C. FOLLOWED BY DILUTING WITH WATER AND SLUSHING AND THEN MECHANICALLY BEATING THE RESULTANT PULP FOR ABOUT FIVE MINUTES TO PRODUCE A REFINED PULP HAVING ADEQUATE FREENESS, AND THEREAFTER FORMING THE PULP INTO A SHEET.
References Cited (Backward Citations)
US2485670A
Cited
US3020179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |