US3386449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a reconstituted tobacco sheet
Assignee: Philip Morris USA Inc
•
Filing: 1966-06-16
•
Granted: 1968-06-04
•
Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 John D Hind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:27
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
100 words
A METHOD OF MAKING A RECONSTITUTED TOBACCO SHEET WHICH COMPRISES REACTING AT A TEMPERATURE OF FROM ROOM TEMPERATURE TO ABOUT 300*F. TOBACCO PLANT PARTS WITH AN AQUEOUS SOLUTION OF DIAMMONIUM ACID PHOSPHATE, SAID PHOSPHATE COMPRISING FROM 1 TO 30 PARTS BY WEIGHT PER 100 PARTS OF TOBACCO, THE REACTION BEING CONTINUED UNTIL A MEASURABLE AMOUNT OF PECTINS ARE RELEASED FROM THE TOBACCO, ADDING FROM 1 TO 50 PARTS BY WEIGHT PER 100 PARTS OF TOBACCO OF AN ALKALINE EARTH METAL PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM PHOSPHATES, AND CASTING THE RESULTING MATERIAL AS A TOBACCO SHEET.
Claim 2
Independent Claim
100 words
A METHOD OF MAKING A RECONSTITUTED TOBACCO SHEET WHICH COMPRISES REACTING AT A TEMPERATURE OF FROM ROOM TEMPERATURE TO ABOUT 300*F. TOBACCO PLANT PARTS WITH AN AQUEOUS SOLUTION OF DIAMMONIUM ACID PHOSPHATE, SAID PHOSPHATE COMPRISING FROM 1 TO 30 PARTS BY WEIGHT PER 100 PARTS OF TOBACCO, THE REACTION BEING CONTINUED UNTIL A MEASURABLE AMOUNT OF PECTINS ARE RELEASED FROM THE TOBACCO, ADDING FROM 1 TO 50 PARTS BY WEIGHT PER 100 PARTS OF TOBACCO OF AN ALKALINE EARTH METAL PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM PHOSPHATES, AND CASTING THE RESULTING MATERIAL AS A TOBACCO SHEET.
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |