US3062688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco foils and methods of making the same
Assignee: Individual
•
Filing: 1961-08-14
•
Granted: 1962-11-06
•
Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Detert Ernst-Rolf
- 👤 Buchholz Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:23
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF PRODUCING TOBACCO FOILS COMPRISING THE STEPS OF MIXING FINELY PULVERIZED TOBACCO WITH A VISCOUS SOLUTION OF CELLULOSE DERIVATIVES, SAID SOLUTION BEING A COMBINATION OF WATER-SOLUBLE, HIGHLY METHYLATED METHYL CELLULOSE AND OF A WATER-INSOLUBLE CELLULOSE DERIVATIVE AND AN ORGANIC SOLVENT COMPRISING A MIXTURE OF METHYLENE CHLORIDE AND METHYL ALCOHOL, SHAPING THE PASTY MIXTURE INTO FOILS, AND DRYING THE FOILS.
Claim 2
Independent Claim
61 words
A METHOD OF PRODUCING TOBACCO FOILS COMPRISING THE STEPS OF MIXING FINELY PULVERIZED TOBACCO WITH A VISCOUS SOLUTION OF CELLULOSE DERIVATIVES, SAID SOLUTION BEING A COMBINATION OF WATER-SOLUBLE, HIGHLY METHYLATED METHYL CELLULOSE AND OF A WATER-INSOLUBLE CELLULOSE DERIVATIVE AND AN ORGANIC SOLVENT COMPRISING A MIXTURE OF METHYLENE CHLORIDE AND METHYL ALCOHOL, SHAPING THE PASTY MIXTURE INTO FOILS, AND DRYING THE FOILS.
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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |