Patent US3147199A successfully refreshed from Google Patents.
US3147199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam
Assignee: —
•
Filing: —
•
Granted: 1964-09-01
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Expires: 1981-09-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:19
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR RECOVERING NICOTINE FROM A DILUTE AQUEOUS SOLUTION THEREOF WHICH COMPRISES DISTILLING THE SAID AQUEOUS NICOTINE SOLUTION AT A PRESSURE OF AT LEAST ABOUT 65 POUNDS PER SQUARE INCH ABSOLUTE, CONDENSING THE VAPOR OBTAINED FROM SAID DISTILLATION TO OBTAIN A CONDENSATE CONTAINING MORE THAN 6.9 PERCENT NICOTINE, MAINTAINING SAID CONDENSATE AT A TEMPERATURE WITHIN THE RANGE OF 75*C. TO 180*C. FOR A PERIOD OF TIME TO EFFECT SEPARATION OF TWO LIQUID PHASES AT LEAST ONE OF WHICH HAS A NICOTINE CONTENT ABOVE ABOUT 6.9% BY WEIGHT, SEPARATING THE HIGHER NICOTINE CONTENT PHASE FROM THE LOWER NICOTINE CONTENT PHASE, AND RECYCLING THE LOWER NICOTINE PHASE FOR FURTHER DISTILLATION AT A PRESSURE OF AT LEAST ABOUT 65 POUNDS PER SQUARE INCH ABSOLUTE.
Claim 2
Dependent Claim
122 words
A PROCESS FOR RECOVERING NICOTINE FROM A DILUTE AQUEOUS SOLUTION THEREOF WHICH COMPRISES DISTILLING THE SAID AQUEOUS NICOTINE SOLUTION AT A PRESSURE OF AT LEAST ABOUT 65 POUNDS PER SQUARE INCH ABSOLUTE, CONDENSING THE VAPOR OBTAINED FROM SAID DISTILLATION TO OBTAIN A CONDENSATE CONTAINING MORE THAN 6.9 PERCENT NICOTINE, MAINTAINING SAID CONDENSATE AT A TEMPERATURE WITHIN THE RANGE OF 75*C. TO 180*C. FOR A PERIOD OF TIME TO EFFECT SEPARATION OF TWO LIQUID PHASES AT LEAST ONE OF WHICH HAS A NICOTINE CONTENT ABOVE ABOUT 6.9% BY WEIGHT, SEPARATING THE HIGHER NICOTINE CONTENT PHASE FROM THE LOWER NICOTINE CONTENT PHASE, AND RECYCLING THE LOWER NICOTINE PHASE FOR FURTHER DISTILLATION AT A PRESSURE OF AT LEAST ABOUT 65 POUNDS PER SQUARE INCH ABSOLUTE.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |