Patent US3147200A successfully refreshed from Google Patents.
US3147200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of nicotine from dilute aqueous solutions
Assignee: —
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Filing: —
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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 16:21
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C209/00; C07C209/82; C07C209/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A PROCESS FOR RECOVERING NICOTINE FROM DILUTE AQUEOUS SOLUTIONS THEREOF BY DISTILLING THE SAID SOLUTION, THE IMPROVEMENT WHICH CONSISTS OF FIRST DISTILLING SAID AQUEOUS NICOTINE SOLUTION AT A PRESSUR WITHIN THE RANGE FROM ABOUT 40 TO 250 POUNDS PER SQUARE INCH ABSOLUTE TO OBTAIN A NICOTINE ENRICHED DISTILLATE, AND THEN DISTILLING SAID DISTILLATE AT A PRESSURE FROM ABOUT 100 TO 300 MILLIMETERS OF MERCURY ABSOLUTE TO OBTAIN A HIGHLY ENRICHED NICOTINE RESIDUAL LIQUOR.
Claim 2
Dependent Claim
74 words
IN A PROCESS FOR RECOVERING NICOTINE FROM DILUTE AQUEOUS SOLUTIONS THEREOF BY DISTILLING THE SAID SOLUTION, THE IMPROVEMENT WHICH CONSISTS OF FIRST DISTILLING SAID AQUEOUS NICOTINE SOLUTION AT A PRESSUR WITHIN THE RANGE FROM ABOUT 40 TO 250 POUNDS PER SQUARE INCH ABSOLUTE TO OBTAIN A NICOTINE ENRICHED DISTILLATE, AND THEN DISTILLING SAID DISTILLATE AT A PRESSURE FROM ABOUT 100 TO 300 MILLIMETERS OF MERCURY ABSOLUTE TO OBTAIN A HIGHLY ENRICHED NICOTINE RESIDUAL LIQUOR.
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 |