US2914072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of improving the smoking qualities of tobacco
Assignee: Individual
•
Filing: 1955-01-31
•
Granted: 1959-11-24
•
Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 Tyrer Daniel
- 👤 Denis D Tyrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:27
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/28; A24B15/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS OF TREATING NORMALLY DISCARDABLE AND POOR QUALITY PORTIONS OF TOBACCO LEAVES TO PRODUCE USEFUL CIGARETTE AND PIPE TOBACCO OF HIGH QUALITY, COMPRISING DISPERSING IN SAID PORTIONS NOT MORE THAN APPROXIMATELY 2% BY WEIGHT OF A PRIMARY CATALYST CONSISTING OF AT LEAST ONE SUITABLE SALT SELECTED FROM THE GROUP OF SALTS OF THE METALS CONSISTING OF SALTS OF COBALT, MANGANESE, NICKEL, COPPER, CHROMIUM AND SILVER, AND INTRODUCING WITH SAID CATALYST APPROXIMATELY 2% OF A SIMPLE ALIPHATIC ACID SELECTED FROM THE GROUP OF SUITABLE ACIDS CONSISTING OF ACETIC, PHOSPHORIC, TARTARIC, GLYCOLLIC AND LACTIC ACIDS.
Claim 2
Dependent Claim
94 words
THE PROCESS OF TREATING NORMALLY DISCARDABLE AND POOR QUALITY PORTIONS OF TOBACCO LEAVES TO PRODUCE USEFUL CIGARETTE AND PIPE TOBACCO OF HIGH QUALITY, COMPRISING DISPERSING IN SAID PORTIONS NOT MORE THAN APPROXIMATELY 2% BY WEIGHT OF A PRIMARY CATALYST CONSISTING OF AT LEAST ONE SUITABLE SALT SELECTED FROM THE GROUP OF SALTS OF THE METALS CONSISTING OF SALTS OF COBALT, MANGANESE, NICKEL, COPPER, CHROMIUM AND SILVER, AND INTRODUCING WITH SAID CATALYST APPROXIMATELY 2% OF A SIMPLE ALIPHATIC ACID SELECTED FROM THE GROUP OF SUITABLE ACIDS CONSISTING OF ACETIC, PHOSPHORIC, TARTARIC, GLYCOLLIC AND LACTIC ACIDS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |