US2809637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved tobacco products and cigarette paper and methods of making same
Assignee: Verdurin Co
•
Filing: 1950-11-17
•
Granted: 1957-10-15
•
Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 William J Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:12
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/30; A24B15/302; A24B15/303; A24B15/281; A24B15/282; A24B15/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF ENCHANCING THE SMOKING QUALITY OF CIGARETTES WHICH COMPRISES IMPREGNATING THE PAPER WRAPPER THEREOF WITH AN INSOLUBLE EARTH METAL HYDROXIDE OR CARBONATE ADSORBENT CARRYING A WATER-INSOLUBLE CHLOROPLASTIC COMPLEX AS DIRECTLY SECURABLE FROM CHLOROPLASTS OF GREEN LEAVES, THE QUANTITY OF SAID COMPLEX NOT EXCEEDING SUBSTANTIALLY 2% OF THE DRY WEIGHT OF THE CIGARETTE WRAPPER.
Claim 2
Independent Claim
55 words
A METHOD OF ENCHANCING THE SMOKING QUALITY OF CIGARETTES WHICH COMPRISES IMPREGNATING THE PAPER WRAPPER THEREOF WITH AN INSOLUBLE EARTH METAL HYDROXIDE OR CARBONATE ADSORBENT CARRYING A WATER-INSOLUBLE CHLOROPLASTIC COMPLEX AS DIRECTLY SECURABLE FROM CHLOROPLASTS OF GREEN LEAVES, THE QUANTITY OF SAID COMPLEX NOT EXCEEDING SUBSTANTIALLY 2% OF THE DRY WEIGHT OF THE CIGARETTE WRAPPER.
References Cited (Backward Citations)
US2493288A
Cited
US1462480A
Cited
US1581618A
Cited
US1638700A
Cited
US1870259A
Cited
US1842266A
Cited
GB485188A
Cited
US2305828A
Cited
US2188319A
Cited
US2349590A
Cited
US2333658A
Cited
US2433593A
Cited
US2460284A
Cited
US2460285A
Cited
US2567362A
Cited
US2513002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |