US2805669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refluxed tobacco extract and method of making the same
Assignee: Papel Para Cigarros SA
•
Filing: 1955-02-07
•
Granted: 1957-09-10
•
Expires: 1975-02-07
Abstract
No abstract record available.
Inventors
- 👤 Merino Miguel Miquely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:55
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/24; A24B15/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD OF TREATING CIGARETTE PAPER WHICH CONSISTS IN IMPREGNATING THE PAPER WITH AN ALCOHOLIC EXTRACT OF TOBACCO, THE SAID EXTRACT BEING DERIVED BY REFLUX EXTRACTION OF TOBACCO WITH ALCOHOL AND THE SUBSEQUENT DECOLORIZATION OF SAID EXTRACT BY CHARCOAL, THE SAID EXTRACT HAVING APPROXIMATELY .005% TO .07% BY WEIGHT OF DISSOLVED MATTER
Claim 2
Independent Claim
52 words
A METHOD OF TREATING CIGARETTE PAPER WHICH CONSISTS IN IMPREGNATING THE PAPER WITH AN ALCOHOLIC EXTRACT OF TOBACCO, THE SAID EXTRACT BEING DERIVED BY REFLUX EXTRACTION OF TOBACCO WITH ALCOHOL AND THE SUBSEQUENT DECOLORIZATION OF SAID EXTRACT BY CHARCOAL, THE SAID EXTRACT HAVING APPROXIMATELY .005% TO .07% BY WEIGHT OF DISSOLVED MATTER
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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |