US2886041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarette paper
Assignee: RJ Reynolds Tobacco Co
•
Filing: 1957-06-17
•
Granted: 1959-05-12
•
Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Edgar H Harwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:31
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/14; D21H5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A CIGARETTE PAPER HAVING ADDED THERETO SODIUM AND POTASSIUM SALTS OF SUBSTITUTED MALONIC ACID HAVING THE FORMULA
Claim 2
Dependent Claim
17 words
A CIGARETTE PAPER HAVING ADDED THERETO SODIUM AND POTASSIUM SALTS OF SUBSTITUTED MALONIC ACID HAVING THE FORMULA
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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |