US3046997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective alkaloid extraction
Assignee: Philip Morris USA Inc
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Filing: 1960-09-27
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Granted: 1962-07-31
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Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 John D Hind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:39
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/18; A24B15/24; A24B15/241; A24B15/243; A24B15/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR SELECTIVE REMOVAL OF ALKALOID FROM TOBACCO WHICH COMPRISES THE STEPS OF EXTRACTING TOBACCO WITH ORGANIC SOLVENT, CONTACTING THE RESULTANT SOLVENT EXTRACT WITH BRINE TO REMOVE ALKALOID SELECTIVELY FROM SAID EXTRACT, RECYCLING THE ALKALOID-RELIEVED SOLVENT TO TOBACCO ALKALIZING THE ALKALOI 1-ENRICHED BRINE, CONTACTING SAID ALKALOID-ENRICHED BRINE WITH A SECOND ORGANIC SOLVENT TO REMOVE THE SULTANT ALKALOID-ENRICHED SECOND SOLVENT. FROM THE RESULTANT ALKALOID-ENTRICHED SECOND SOLVENT.
Claim 2
Dependent Claim
66 words
A PROCESS FOR SELECTIVE REMOVAL OF ALKALOID FROM TOBACCO WHICH COMPRISES THE STEPS OF EXTRACTING TOBACCO WITH ORGANIC SOLVENT, CONTACTING THE RESULTANT SOLVENT EXTRACT WITH BRINE TO REMOVE ALKALOID SELECTIVELY FROM SAID EXTRACT, RECYCLING THE ALKALOID-RELIEVED SOLVENT TO TOBACCO ALKALIZING THE ALKALOI 1-ENRICHED BRINE, CONTACTING SAID ALKALOID-ENRICHED BRINE WITH A SECOND ORGANIC SOLVENT TO REMOVE THE SULTANT ALKALOID-ENRICHED SECOND SOLVENT. FROM THE RESULTANT ALKALOID-ENTRICHED SECOND SOLVENT.
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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |