US3310057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized reconstituted tobacco foil
Assignee: Dow Chemical Co
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Filing: 1964-04-30
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Granted: 1967-03-21
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Albert B Savage
- 👤 Julius C Aldrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12; A24B15/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A PROCESS FOR THE PREPARATION OF A RECONSTITUTED TOBACCO FOIL FROM FINELY DIVIDED TOBACCO AND A CELLULOSIC BINDER WHEREIN THE TOBACCO AND CELLULOSIC BINDER ARE INTERMIXED IN THE PRESENCE OF WATER, THE IMPROVEMENT WHEREBY THE TOBACCO HAD ENHANCED COLOR STABILITY DURING MANUFACTURE OF THE RECONSTITUTED TOBACCO FOIL WHICH COMPRISES; (A) TREATING 100 PARTS OF FINELY DIVIDED TOBACCO WITH FROM ABOUT 2 TO 30 PARTS OF A LIQUID POLYOXYALKYLENE POLYOL WHEREIN THE OXYALKYLENE GROUPS ARE OXYPROPYLENE AND/OR OXYBUTYLENE GROUPS AND CAHRACTERIZED BY: (1) A WATER SOLUBILITY OF LESS THAN ABOUT 2 WEIGHT PERCENT AT 25*C., (2) A VISCOSITY OF 100 TO 1,200 CENTISTOKES AT 25* C., AND (3) AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 500 TO 5,000; AND (B) INTERMIXING THEREWITH THE CELLULOSIC BINDER AND FORMING A RECONSTITUTED TOBACCO FOIL.
Claim 2
Dependent Claim
131 words
IN A PROCESS FOR THE PREPARATION OF A RECONSTITUTED TOBACCO FOIL FROM FINELY DIVIDED TOBACCO AND A CELLULOSIC BINDER WHEREIN THE TOBACCO AND CELLULOSIC BINDER ARE INTERMIXED IN THE PRESENCE OF WATER, THE IMPROVEMENT WHEREBY THE TOBACCO HAD ENHANCED COLOR STABILITY DURING MANUFACTURE OF THE RECONSTITUTED TOBACCO FOIL WHICH COMPRISES; (A) TREATING 100 PARTS OF FINELY DIVIDED TOBACCO WITH FROM ABOUT 2 TO 30 PARTS OF A LIQUID POLYOXYALKYLENE POLYOL WHEREIN THE OXYALKYLENE GROUPS ARE OXYPROPYLENE AND/OR OXYBUTYLENE GROUPS AND CAHRACTERIZED BY: (1) A WATER SOLUBILITY OF LESS THAN ABOUT 2 WEIGHT PERCENT AT 25*C., (2) A VISCOSITY OF 100 TO 1,200 CENTISTOKES AT 25* C., AND (3) AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 500 TO 5,000; AND (B) INTERMIXING THEREWITH THE CELLULOSIC BINDER AND FORMING A RECONSTITUTED TOBACCO FOIL.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |